原文连接:https://www.cnblogs.com/yanweidie/p/6485957.html
最近在做报表统计方面的需求,涉及到行转列报表。根据以往经验使用SQL可以比较容易完成,这次决定挑战一下直接通过代码方式完成行转列。期间遇到几个问题和用到的新知识这里整理记录一下。
阅读目录
问题介绍
以家庭月度费用为例,可以在[Name,Area,Month]三个维度上随意组合进行分组,三个维度中选择一个做为列显示。
/// <summary> /// 家庭费用情况 /// </summary> public class House { /// <summary> /// 户主姓名 /// </summary> public string Name { get; set; }</span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><summary></span> <span style="color: rgba(128, 128, 128, 1)">///</span><span style="color: rgba(0, 128, 0, 1)"> 所属行政区域 </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"></summary></span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">string</span> Area { <span style="color: rgba(0, 0, 255, 1)">get</span>; <span style="color: rgba(0, 0, 255, 1)">set</span><span style="color: rgba(0, 0, 0, 1)">; } </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><summary></span> <span style="color: rgba(128, 128, 128, 1)">///</span><span style="color: rgba(0, 128, 0, 1)"> 月份 </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"></summary></span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">string</span> Month { <span style="color: rgba(0, 0, 255, 1)">get</span>; <span style="color: rgba(0, 0, 255, 1)">set</span><span style="color: rgba(0, 0, 0, 1)">; } </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><summary></span> <span style="color: rgba(128, 128, 128, 1)">///</span><span style="color: rgba(0, 128, 0, 1)"> 电费金额 </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"></summary></span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">double</span> DfMoney { <span style="color: rgba(0, 0, 255, 1)">get</span>; <span style="color: rgba(0, 0, 255, 1)">set</span><span style="color: rgba(0, 0, 0, 1)">; } </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><summary></span> <span style="color: rgba(128, 128, 128, 1)">///</span><span style="color: rgba(0, 128, 0, 1)"> 水费金额 </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"></summary></span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">double</span> SfMoney { <span style="color: rgba(0, 0, 255, 1)">get</span>; <span style="color: rgba(0, 0, 255, 1)">set</span><span style="color: rgba(0, 0, 0, 1)">; } </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><summary></span> <span style="color: rgba(128, 128, 128, 1)">///</span><span style="color: rgba(0, 128, 0, 1)"> 燃气金额 </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"></summary></span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">double</span> RqfMoney { <span style="color: rgba(0, 0, 255, 1)">get</span>; <span style="color: rgba(0, 0, 255, 1)">set</span><span style="color: rgba(0, 0, 0, 1)">; } }</span></pre>
户主-月明细报表 | ||||||
户主姓名 | 2016-01 | 2016-02 | ||||
---|---|---|---|---|---|---|
电费 | 水费 | 燃气费 | 电费 | 水费 | 燃气费 | |
张三 | 240.9 | 30 | 25 | 167 | 24.5 | 17.9 |
李四 | 56.7 | 24.7 | 13.2 | 65.2 | 18.9 | 14.9 |
区域-月明细报表 | ||||||
区域 | 2016-01 | 2016-02 | ||||
---|---|---|---|---|---|---|
电费 | 水费 | 燃气费 | 电费 | 水费 | 燃气费 | |
江夏区 | 2240.9 | 330 | 425 | 5167 | 264.5 | 177.9 |
洪山区 | 576.7 | 264.7 | 173.2 | 665.2 | 108.9 | 184.9 |
区域月份-户明细报表 | |||||||
区域 | 月份 | 张三 | 李四 | ||||
---|---|---|---|---|---|---|---|
燃气费 | 电费 | 水费 | 燃气费 | 电费 | 水费 | ||
江夏区 | 2016-01 | 2240.9 | 330 | 425 | 5167 | 264.5 | 177.9 |
洪山区 | 2016-01 | 576.7 | 264.7 | 173.2 | 665.2 | 108.9 | 184.9 |
江夏区 | 2016-02 | 3240.9 | 430 | 525 | 6167 | 364.5 | 277.9 |
洪山区 | 2016-02 | 676.7 | 364.7 | 273.2 | 765.2 | 208.9 | 284.9 |
{DimensionList:['Name'],DynamicColumn:'Month'}
第2个表格前台传给后台参数
{DimensionList:['Area'],DynamicColumn:'Month'}
{DimensionList:['Area','Month'],DynamicColumn:'Name'}
动态Linq
下面使用System.Linq.Dynamic完成行转列功能,Nuget上搜索System.Linq.Dynamic即可下载该包。
代码进行了封装,实现了通用的List<T>行转列功能。
/// <summary> /// 动态Linq方式实现行转列 /// </summary> /// <param name="list">数据</param> /// <param name="DimensionList">维度列</param> /// <param name="DynamicColumn">动态列</param> /// <returns>行转列后数据</returns> private static List<dynamic> DynamicLinq<T>(List<T> list, List<string> DimensionList, string DynamicColumn, out List<string> AllDynamicColumn) where T : class { //获取所有动态列 var columnGroup = list.GroupBy(DynamicColumn, "new(it as Vm)") as IEnumerable<IGrouping<dynamic, dynamic>>; List<string> AllColumnList = new List<string>(); foreach (var item in columnGroup) { if (!string.IsNullOrEmpty(item.Key)) { AllColumnList.Add(item.Key); } } AllDynamicColumn = AllColumnList; var dictFunc = new Dictionary<string, Func<T, bool>>(); foreach (var column in AllColumnList) { var func = DynamicExpression.ParseLambda<T, bool>(string.Format("{0}=="{1}"", DynamicColumn, column)).Compile(); dictFunc[column] = func; }</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">获取实体所有属性</span> Dictionary<<span style="color: rgba(0, 0, 255, 1)">string</span>, PropertyInfo> PropertyInfoDict = <span style="color: rgba(0, 0, 255, 1)">new</span> Dictionary<<span style="color: rgba(0, 0, 255, 1)">string</span>, PropertyInfo><span style="color: rgba(0, 0, 0, 1)">(); Type type </span>= <span style="color: rgba(0, 0, 255, 1)">typeof</span><span style="color: rgba(0, 0, 0, 1)">(T); </span><span style="color: rgba(0, 0, 255, 1)">var</span> propertyInfos = type.GetProperties(BindingFlags.Instance |<span style="color: rgba(0, 0, 0, 1)"> BindingFlags.Public); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">数值列</span> List<<span style="color: rgba(0, 0, 255, 1)">string</span>> AllNumberField = <span style="color: rgba(0, 0, 255, 1)">new</span> List<<span style="color: rgba(0, 0, 255, 1)">string</span>><span style="color: rgba(0, 0, 0, 1)">(); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> item <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> propertyInfos) { PropertyInfoDict[item.Name] </span>=<span style="color: rgba(0, 0, 0, 1)"> item; </span><span style="color: rgba(0, 0, 255, 1)">if</span> (item.PropertyType == <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">int</span>) || item.PropertyType == <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">double</span>) || item.PropertyType == <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">float</span><span style="color: rgba(0, 0, 0, 1)">)) { AllNumberField.Add(item.Name); } } </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">分组</span> <strong><span style="color: rgba(255, 0, 0, 1)"> var dataGroup = list.GroupBy(string.Format("new ({0})", string.Join(",", DimensionList)), "new(it as Vm)") as IEnumerable<IGrouping<dynamic, dynamic>></span></strong><span style="color: rgba(0, 0, 0, 1)"><strong><span style="color: rgba(255, 0, 0, 1)">;</span></strong> List</span><<span style="color: rgba(0, 0, 255, 1)">dynamic</span>> listResult = <span style="color: rgba(0, 0, 255, 1)">new</span> List<<span style="color: rgba(0, 0, 255, 1)">dynamic</span>><span style="color: rgba(0, 0, 0, 1)">(); IDictionary</span><<span style="color: rgba(0, 0, 255, 1)">string</span>, <span style="color: rgba(0, 0, 255, 1)">object</span>> itemObj = <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">; T vm2 </span>= <span style="color: rgba(0, 0, 255, 1)">default</span><span style="color: rgba(0, 0, 0, 1)">(T); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> group <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> dataGroup) { itemObj </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> ExpandoObject(); </span><span style="color: rgba(0, 0, 255, 1)">var</span> listVm = group.Select(e => e.Vm <span style="color: rgba(0, 0, 255, 1)">as</span><span style="color: rgba(0, 0, 0, 1)"> T).ToList(); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">维度列赋值</span> vm2 =<span style="color: rgba(0, 0, 0, 1)"> listVm.FirstOrDefault(); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> key <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> DimensionList) { itemObj[key] </span>=<span style="color: rgba(0, 0, 0, 1)"> PropertyInfoDict[key].GetValue(vm2); } </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> column <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> AllColumnList) { vm2 </span>=<span style="color: rgba(0, 0, 0, 1)"> listVm.FirstOrDefault(dictFunc[column]); </span><span style="color: rgba(0, 0, 255, 1)">if</span> (vm2 != <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">) { </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">string</span> name <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> AllNumberField) { itemObj[name </span>+ column] =<span style="color: rgba(0, 0, 0, 1)"> PropertyInfoDict[name].GetValue(vm2); } } } listResult.Add(itemObj); } </span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> listResult; }</span></pre>
标红部分使用了System.Linq.Dynamic动态分组功能,传入字符串即可分组。使用了dynamic类型,关于dynamic介绍可以参考其它文章介绍哦。
System.Linq.Dynamic其它用法
上面行转列代码见识了System.Linq.Dynamic的强大,下面再介绍一下会在开发中用到的方法。
Where过滤
list.Where("Name=@0", "张三")
/// <summary> /// EF实体查询封装 /// </summary> /// <typeparam name="T">实体类型</typeparam> /// <param name="Query">IQueryable对象</param> /// <param name="gridParam">过滤条件</param> /// <returns>查询结果</returns> public static EFPaginationResult<T> PageQuery<T>(this IQueryable<T> Query, QueryCondition gridParam) { //查询条件 EFFilter filter = GetParameterSQL<T>(gridParam); var query = Query.Where(filter.Filter, filter.ListArgs.ToArray()); //查询结果 EFPaginationResult<T> result = new EFPaginationResult<T>(); if (gridParam.IsPagination) { int PageSize = gridParam.PageSize; int PageIndex = gridParam.PageIndex < 0 ? 0 : gridParam.PageIndex; //获取排序信息 string sort = GetSort(gridParam, typeof(T).FullName); result.Data = query.OrderBy(sort).Skip(PageIndex * PageSize).Take(PageSize).ToList<T>(); if (gridParam.IsCalcTotal) { result.Total = query.Count(); result.TotalPage = Convert.ToInt32(Math.Ceiling(result.Total * 1.0 / PageSize)); } else { result.Total = result.Data.Count(); } } else { result.Data = query.ToList(); result.Total = result.Data.Count(); } return result; }
/// <summary> /// 通过查询条件,获取参数化查询SQL /// </summary> /// <param name="gridParam">过滤条件</param> /// <returns>过滤条件字符</returns> private static EFFilter GetParameterSQL<T>(QueryCondition gridParam) { EFFilter result = new EFFilter(); //参数值集合 List<object> listArgs = new List<object>(); string filter = "1=1";</span><span style="color: rgba(0, 0, 255, 1)">#region</span> "处理动态过滤条件" <span style="color: rgba(0, 0, 255, 1)">if</span> (gridParam.FilterList != <span style="color: rgba(0, 0, 255, 1)">null</span> && gridParam.FilterList.Count > <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(0, 0, 0, 1)">) { StringBuilder sb </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> StringBuilder(); </span><span style="color: rgba(0, 0, 255, 1)">int</span> paramCount = <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(0, 0, 0, 1)">; DateTime dateTime; </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">操作符</span> <span style="color: rgba(0, 0, 255, 1)">string</span> strOperator = <span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">.Empty; </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> item <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> gridParam.FilterList) { </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">字段名称为空则跳过</span> <span style="color: rgba(0, 0, 255, 1)">if</span> (<span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">.IsNullOrEmpty(item.FieldName)) { </span><span style="color: rgba(0, 0, 255, 1)">continue</span><span style="color: rgba(0, 0, 0, 1)">; } </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">匹配枚举,防止SQL注入</span> Operator operatorEnum = (Operator)Enum.Parse(<span style="color: rgba(0, 0, 255, 1)">typeof</span>(Operator), item.Operator, <span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">跳过字段值为空的</span> <span style="color: rgba(0, 0, 255, 1)">if</span> (operatorEnum != Operator.Null && operatorEnum != Operator.NotNull && <span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">.IsNullOrEmpty(item.FieldValue)) { </span><span style="color: rgba(0, 0, 255, 1)">continue</span><span style="color: rgba(0, 0, 0, 1)">; } strOperator </span>=<span style="color: rgba(0, 0, 0, 1)"> operatorEnum.GetDescription(); </span><span style="color: rgba(0, 0, 255, 1)">if</span> (item.IgnoreCase && !<span style="color: rgba(0, 0, 0, 1)">item.IsDateTime) { </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">2016-07-19添加查询时忽略大小写比较</span> item.FieldValue =<span style="color: rgba(0, 0, 0, 1)"> item.FieldValue.ToLower(); item.FieldName </span>= <span style="color: rgba(0, 0, 255, 1)">string</span>.Format(<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">{0}.ToLower()</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName); } </span><span style="color: rgba(0, 0, 255, 1)">switch</span><span style="color: rgba(0, 0, 0, 1)"> (operatorEnum) { </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">等于,不等于,小于,大于,小于等于,大于等于</span> <span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.EQ: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.NE: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.GT: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.GE: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.LT: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.LE: </span><span style="color: rgba(0, 0, 255, 1)">if</span><span style="color: rgba(0, 0, 0, 1)"> (item.IsDateTime) { </span><span style="color: rgba(0, 0, 255, 1)">if</span> (DateTime.TryParse(item.FieldValue, <span style="color: rgba(0, 0, 255, 1)">out</span><span style="color: rgba(0, 0, 0, 1)"> dateTime)) { </span><span style="color: rgba(0, 0, 255, 1)">if</span> (!item.FieldValue.Contains(<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">00:00:00</span><span style="color: rgba(128, 0, 0, 1)">"</span>) && dateTime.ToString(<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">HH:mm:ss</span><span style="color: rgba(128, 0, 0, 1)">"</span>) == <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">00:00:00</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">) { </span><span style="color: rgba(0, 0, 255, 1)">if</span> (operatorEnum ==<span style="color: rgba(0, 0, 0, 1)"> Operator.LE) { listArgs.Add(DateTime.Parse(dateTime.ToString(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">yyyy-MM-dd</span><span style="color: rgba(128, 0, 0, 1)">"</span>) + <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> 23:59:59</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">)); } </span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)"> { listArgs.Add(dateTime); } } </span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)"> { listArgs.Add(dateTime); } sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND {0} {1} @{2}</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, strOperator, paramCount); } } </span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)"> { listArgs.Add(ConvertToType(item.FieldValue, GetPropType</span><T><span style="color: rgba(0, 0, 0, 1)">(item.FieldName))); sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND {0} {1} @{2}</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, strOperator, paramCount); } paramCount</span>++<span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">break</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.Like: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.NotLike: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.LLike: </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.RLike: listArgs.Add(item.FieldValue); </span><span style="color: rgba(0, 0, 255, 1)">if</span> (operatorEnum ==<span style="color: rgba(0, 0, 0, 1)"> Operator.Like) { sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND {0}.Contains(@{1})</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, paramCount); } </span><span style="color: rgba(0, 0, 255, 1)">else</span> <span style="color: rgba(0, 0, 255, 1)">if</span> (operatorEnum ==<span style="color: rgba(0, 0, 0, 1)"> Operator.NotLike) { sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND !{0}.Contains(@{1})</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, paramCount); } </span><span style="color: rgba(0, 0, 255, 1)">else</span> <span style="color: rgba(0, 0, 255, 1)">if</span> (operatorEnum ==<span style="color: rgba(0, 0, 0, 1)"> Operator.LLike) { sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND {0}.EndsWith(@{1})</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, paramCount); } </span><span style="color: rgba(0, 0, 255, 1)">else</span> <span style="color: rgba(0, 0, 255, 1)">if</span> (operatorEnum ==<span style="color: rgba(0, 0, 0, 1)"> Operator.RLike) { sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND {0}.StartsWith(@{1})</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, paramCount); } paramCount</span>++<span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">break</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.Null: listArgs.Add(item.FieldValue); sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND {0}=null</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName); paramCount</span>++<span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">break</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.NotNull: listArgs.Add(item.FieldValue); sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND {0}!=null</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName); paramCount</span>++<span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">break</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.In: sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND (</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> schar <span style="color: rgba(0, 0, 255, 1)">in</span> item.FieldValue.Split(<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">,</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)) { listArgs.Add(schar); sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">{0}=@{1} or </span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, paramCount); paramCount</span>++<span style="color: rgba(0, 0, 0, 1)">; } sb.Remove(sb.Length </span>- <span style="color: rgba(128, 0, 128, 1)">3</span>, <span style="color: rgba(128, 0, 128, 1)">3</span><span style="color: rgba(0, 0, 0, 1)">); sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> )</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 0, 255, 1)">break</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">case</span><span style="color: rgba(0, 0, 0, 1)"> Operator.NotIn: sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> AND (</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> schar <span style="color: rgba(0, 0, 255, 1)">in</span> item.FieldValue.Split(<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">,</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">)) { listArgs.Add(schar); sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">{0}!=@{1} and </span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">, item.FieldName, paramCount); paramCount</span>++<span style="color: rgba(0, 0, 0, 1)">; } sb.Remove(sb.Length </span>- <span style="color: rgba(128, 0, 128, 1)">3</span>, <span style="color: rgba(128, 0, 128, 1)">3</span><span style="color: rgba(0, 0, 0, 1)">); sb.AppendFormat(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)"> )</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 0, 255, 1)">break</span><span style="color: rgba(0, 0, 0, 1)">; } </span><span style="color: rgba(0, 0, 255, 1)">if</span> (sb.ToString().Length > <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(0, 0, 0, 1)">) { filter </span>= sb.ToString().Substring(<span style="color: rgba(128, 0, 128, 1)">4</span>, sb.Length - <span style="color: rgba(128, 0, 128, 1)">4</span><span style="color: rgba(0, 0, 0, 1)">); } } </span><span style="color: rgba(0, 0, 255, 1)">#endregion</span><span style="color: rgba(0, 0, 0, 1)"> } result.Filter </span>=<span style="color: rgba(0, 0, 0, 1)"> filter; result.ListArgs </span>=<span style="color: rgba(0, 0, 0, 1)"> listArgs; </span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> result; }</span></pre>
DataTable行转列
该部分是根据网友反馈后期再补充上的内容,意在完善行转列。下面给出实现代码
using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Data; using System.Linq;namespace DataTable_RowToColumn
{
class Program
{
static void Main(string[] args)
{
DataTable dt = InitTable();
List<string> DimensionList = new List<string>() { "Area", "Month" };
string DynamicColumn = "Name";
List<string> AllDynamicColumn = null;
DataTable dtResult = RowToColumn(dt, DimensionList, DynamicColumn, out AllDynamicColumn);
Console.WriteLine(JsonConvert.SerializeObject(dtResult, Formatting.Indented));
Console.Read();
}</span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><summary></span> <span style="color: rgba(128, 128, 128, 1)">///</span><span style="color: rgba(0, 128, 0, 1)"> 动态Linq方式实现行转列 </span><span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"></summary></span> <span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><param name="list"></span><span style="color: rgba(0, 128, 0, 1)">数据</span><span style="color: rgba(128, 128, 128, 1)"></param></span> <span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><param name="DimensionList"></span><span style="color: rgba(0, 128, 0, 1)">维度列</span><span style="color: rgba(128, 128, 128, 1)"></param></span> <span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><param name="DynamicColumn"></span><span style="color: rgba(0, 128, 0, 1)">动态列</span><span style="color: rgba(128, 128, 128, 1)"></param></span> <span style="color: rgba(128, 128, 128, 1)">///</span> <span style="color: rgba(128, 128, 128, 1)"><returns></span><span style="color: rgba(0, 128, 0, 1)">行转列后数据</span><span style="color: rgba(128, 128, 128, 1)"></returns></span> <span style="color: rgba(0, 0, 255, 1)">private</span> <span style="color: rgba(0, 0, 255, 1)">static</span> DataTable RowToColumn(DataTable dt, List<<span style="color: rgba(0, 0, 255, 1)">string</span>> DimensionList, <span style="color: rgba(0, 0, 255, 1)">string</span> DynamicColumn, <span style="color: rgba(0, 0, 255, 1)">out</span> List<<span style="color: rgba(0, 0, 255, 1)">string</span>><span style="color: rgba(0, 0, 0, 1)"> AllDynamicColumn) { </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">获取所有动态列</span> AllDynamicColumn = <span style="color: rgba(0, 0, 255, 1)">new</span> List<<span style="color: rgba(0, 0, 255, 1)">string</span>><span style="color: rgba(0, 0, 0, 1)">(); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (DataRow dr <span style="color: rgba(0, 0, 255, 1)">in</span> dt.DefaultView.ToTable(<span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">, DynamicColumn).Rows) { </span><span style="color: rgba(0, 0, 255, 1)">if</span> (dr[DynamicColumn] != <span style="color: rgba(0, 0, 255, 1)">null</span> && !<span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">.IsNullOrEmpty(dr[DynamicColumn].ToString())) { AllDynamicColumn.Add(dr[DynamicColumn].ToString()); } } </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">数值列</span> Dictionary<<span style="color: rgba(0, 0, 255, 1)">string</span>, Type> AllNumberColumn = <span style="color: rgba(0, 0, 255, 1)">new</span> Dictionary<<span style="color: rgba(0, 0, 255, 1)">string</span>, Type><span style="color: rgba(0, 0, 0, 1)">(); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (DataColumn item <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> dt.Columns) { </span><span style="color: rgba(0, 0, 255, 1)">if</span> (item.DataType == <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">int</span>) || item.DataType == <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">double</span>) || item.DataType == <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">float</span><span style="color: rgba(0, 0, 0, 1)">)) { AllNumberColumn.Add(item.ColumnName, item.DataType); } } </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">结果DataTable创建</span> DataTable dtResult = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> DataTable(); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> item <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> DimensionList) { dtResult.Columns.Add(item, </span><span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">)); } </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">动态列</span> <span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> dynamicValue <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> AllDynamicColumn) { </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> item <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> AllNumberColumn.Keys) { dtResult.Columns.Add(item </span>+<span style="color: rgba(0, 0, 0, 1)"> dynamicValue, AllNumberColumn[item]); } } </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">分组-优化性能</span> Dictionary<<span style="color: rgba(0, 0, 255, 1)">string</span>, List<DataRow>> dict = <span style="color: rgba(0, 0, 255, 1)">new</span> Dictionary<<span style="color: rgba(0, 0, 255, 1)">string</span>, List<DataRow>><span style="color: rgba(0, 0, 0, 1)">(); List</span><DataRow> drList = <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">string</span> groupKey = <span style="color: rgba(128, 0, 0, 1)">""</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (DataRow dr <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> dt.Rows) { groupKey </span>= <span style="color: rgba(128, 0, 0, 1)">""</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> item <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> DimensionList) { groupKey </span>+= dr[item] + <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">#</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; } </span><span style="color: rgba(0, 0, 255, 1)">if</span> (!dict.TryGetValue(groupKey, <span style="color: rgba(0, 0, 255, 1)">out</span><span style="color: rgba(0, 0, 0, 1)"> drList)) { drList </span>= <span style="color: rgba(0, 0, 255, 1)">new</span> List<DataRow><span style="color: rgba(0, 0, 0, 1)">(); dict[groupKey] </span>=<span style="color: rgba(0, 0, 0, 1)"> drList; } drList.Add(dr); } DataRow drReult </span>= <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">; DataTable dtTemp </span>= <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">; Dictionary</span><<span style="color: rgba(0, 0, 255, 1)">object</span>, DataTable> dictTable = <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> kv <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> dict) { drReult </span>=<span style="color: rgba(0, 0, 0, 1)"> dtResult.NewRow(); </span><span style="color: rgba(0, 0, 255, 1)">var</span> arrKey = kv.Key.Split(<span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(128, 0, 0, 1)">#</span><span style="color: rgba(128, 0, 0, 1)">'</span><span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 0, 255, 1)">int</span> i = <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(0, 0, 0, 1)">; </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> key <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> DimensionList) { drReult[key] </span>=<span style="color: rgba(0, 0, 0, 1)"> arrKey[i]; i</span>++<span style="color: rgba(0, 0, 0, 1)">; } dictTable </span>= (<span style="color: rgba(0, 0, 255, 1)">from</span> p <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> kv.Value.AsEnumerable() group p by p.Field</span><<span style="color: rgba(0, 0, 255, 1)">object</span>><span style="color: rgba(0, 0, 0, 1)">(DynamicColumn) into g </span><span style="color: rgba(0, 0, 255, 1)">select</span> g).ToDictionary(e => e.Key, e =><span style="color: rgba(0, 0, 0, 1)"> e.CopyToDataTable()); </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> dynamicValue <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> AllDynamicColumn) { </span><span style="color: rgba(0, 0, 255, 1)">if</span> (dictTable.TryGetValue(dynamicValue, <span style="color: rgba(0, 0, 255, 1)">out</span><span style="color: rgba(0, 0, 0, 1)"> dtTemp)) { </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> numColumn <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> AllNumberColumn.Keys) { drReult[numColumn </span>+ dynamicValue] = dtTemp.Compute(<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">sum(</span><span style="color: rgba(128, 0, 0, 1)">"</span> + numColumn + <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">)</span><span style="color: rgba(128, 0, 0, 1)">"</span>, <span style="color: rgba(128, 0, 0, 1)">""</span><span style="color: rgba(0, 0, 0, 1)">); } } </span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)"> { </span><span style="color: rgba(0, 0, 255, 1)">foreach</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> numColumn <span style="color: rgba(0, 0, 255, 1)">in</span><span style="color: rgba(0, 0, 0, 1)"> AllNumberColumn.Keys) { drReult[numColumn </span>+ dynamicValue] = <span style="color: rgba(128, 0, 128, 1)">0</span><span style="color: rgba(0, 0, 0, 1)">; } } } dtResult.Rows.Add(drReult); } </span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> dtResult; } </span><span style="color: rgba(0, 0, 255, 1)">private</span> <span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)"> DataTable InitTable() { DataTable dt </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> DataTable(); dt.Columns.Add(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>, <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">)); dt.Columns.Add(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>, <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">)); dt.Columns.Add(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>, <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">string</span><span style="color: rgba(0, 0, 0, 1)">)); dt.Columns.Add(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>, <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">double</span><span style="color: rgba(0, 0, 0, 1)">)); dt.Columns.Add(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>, <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">double</span><span style="color: rgba(0, 0, 0, 1)">)); dt.Columns.Add(</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>, <span style="color: rgba(0, 0, 255, 1)">typeof</span>(<span style="color: rgba(0, 0, 255, 1)">double</span><span style="color: rgba(0, 0, 0, 1)">)); DataRow row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">张三</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-01</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">江夏区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">240.9</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">30</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">25</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">张三</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-02</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">江夏区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">167</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">24.5</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">17.9</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">小燕子</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-01</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">江夏区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">340.9</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">20</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">55</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">小燕子</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-02</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">江夏区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">67</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">64.5</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">77.9</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">李四</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-01</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">洪山区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">56.7</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">24.7</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">13.2</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">李四</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-02</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">洪山区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">65.2</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">18.9</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">14.9</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">尔康</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-01</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">洪山区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">156.7</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">124.7</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">33.2</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); row </span>=<span style="color: rgba(0, 0, 0, 1)"> dt.NewRow(); row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Name</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">尔康</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Month</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">2016-02</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Area</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">洪山区</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">DfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">35.2</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">SfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">28.9</span><span style="color: rgba(0, 0, 0, 1)">; row[</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">RqfMoney</span><span style="color: rgba(128, 0, 0, 1)">"</span>] = <span style="color: rgba(128, 0, 128, 1)">44.9</span><span style="color: rgba(0, 0, 0, 1)">; dt.Rows.Add(row); </span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> dt; } }
}
总结
本篇通过行转列引出了System.Linq.Dynamic,并且介绍了过滤功能,其实它的用处还有很多,等待大家发掘。下面给出本文示例代码:DynamicLinq
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