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懒人小工具1：winform自动生成Model,Insert,Select,Delete以及导出Excel的方法

懒人小工具2：T4自动生成Model,Insert,Select,Delete以及导出Excel的方法

github地址：https://github.com/Jimmey-Jiang/JWorkHelper

在开发的过程中，我们为了节约时间，往往会将大量重复机械的代码封装，考虑代码的复用性，这样我们可以节约很多时间来做别的事情。最近跳槽到一节webform开发的公司，主要是开发自己公司用的ERP。开始因为一些诱惑进来的，现在感觉其实有些后悔放弃了很好的学习ABP以及新知识点像一些很新颖的前端框架进这个公司。但现在跳槽也不是一个明智之举，不好意思扯远了，既来之则安之。最近写了个小工具。主要针对webform开发过程中一些重复的代码处理。

github地址：https://github.com/Jimmey-Jiang/JWorkHelper
其实没有什么特别大的技术难度，其实webform开发貌似也没有特别大的技术难度。

一、首先新建一个类库WorkHelper。

然后新建类Program.cs，这里是作为主程序入口。

 1 using System;
 2 using System.Windows.Forms;
 3 
 4 namespace DevLogHelper
 5 {
 6     static class Program
 7     {
 8         /// <summary>
 9         /// 应用程序的主入口点。
10         /// </summary>
11         [STAThread]
12         static void Main()
13         {
14             Application.EnableVisualStyles();
15             Application.SetCompatibleTextRenderingDefault(false);
16             Application.Run(new BaseSqlBuilder());
17         }
18 
19     }
20 }

View Code

为Main()方法加上STAThread标签。每次只能启动一个窗口。
new 一个BaseSqlBuilder实例，BaseSqlBuilder实例是什么呢，就是我们今天的主题了。

二、winform界面设计

其实界面特别简单的。就是几个label、多选框、容器。
看下代码：

 1 using System;
 2 using System.Resources;
 3 using System.Text;
 4 using System.Windows.Forms;
 5 using DevLogHelper.Resources;
 6 
 7 namespace DevLogHelper
 8 {
 9     public partial class BaseSqlBuilder : Form
10     {
11         readonly ResourceManager _rm = new ResourceManager(typeof(ResourceDevCode));
12         public BaseSqlBuilder()
13         {
14             InitializeComponent();
15         }
16 
17         private void BaseSqlBuilder_Load(object sender, EventArgs e)
18         {
19 
20         }
21         /// <summary>
22         /// 生成
23         /// </summary>
24         /// <param name="sender"></param>
25         /// <param name="e"></param>
26         private void btnCreate_Click(object sender, EventArgs e)
27         {
28             string msg = _rm.GetString("BaseSqlTip");
29             try
30             {
31                 BaseSql.BaseSql sq = new BaseSql.BaseSql();
32                 StringBuilder str = sq.BuilderCode(txtInput.Text, cbIsModel, txt_TableName.Text, ckb_Model.Checked, ckb_Insert.Checked,ckb_Update.Checked,ckb_Select.Checked,ckb_Delete.Checked,ckbExcel.Checked);
33                 txtResult.Text = str.ToString();
34                 Clipboard.SetDataObject(str.ToString());
35             }
36             catch (Exception ex)
37             {
38                 msg = ex.Message;
39             }
40             labTip.Text = msg;
41         }
42 
43     }
44 }

View Code

窗体BaseSqlBuilder继承自Form不必多说。ResourceManager是什么呢，ResourceManager就是一个资源文件，用于处理消息，或者路径什么。后面补上图。
新建一个BaseSql用于处理sql。把页面上的控件消息传递过去。封装一个数据的形式。

三、资源文件以及解决方案结构。

跟踪BuilderCode到BaseSql类。

四、BaseSql类。

首先是对控件传递过来值得检查，参数是否为空等。

            string Table = inputSql[2].ToString();
            if (string.IsNullOrWhiteSpace(inputCode))
            {
                inputCode = "select *from " + Table;
            }
            StringBuilder returnstr = new StringBuilder();
            StringBuilder strBuilder = new StringBuilder();
            DataSet ds = SqlHelper.Query(inputCode);
            DataRow dr = null;
            DataTable dt = new DataTable();

这里如果传递过来的sql语句为空，我们会根据表名自动生成查询SQL。然后根据ado.net 链接数据库生成DataSet 、DataRow 、DataTable 等。当然这里得有SqlHelper。SqlHelper如果需要可以去我源码上下载，稍后会放上源码。主要是链接数据库。执行SQL了。

五、实体

 1   #region 封装实体Model
 2 
 3    #region 封装实体Model
 4 
 5             strBuilder.AppendLine(@"
 6                public class Model
 7             {
 8                ");
 9             for (int i = 0; i < dr.Table.Columns.Count; i++)
10             {
11                 if (i == 0)
12                 {
13                     Id = dr.Table.Columns[0].ToString();//一般情况第一个字段是主键，当然如果第一个字段不是主键，那就需要修改了
14                 }
15                 string Type = dr.Table.Columns[i].DataType.ToString();
16                 switch (Type)
17                 {
18                     case "System.String":
19                         strBuilder.AppendLine("       private string " + "_" + dr.Table.Columns[i] + ";");
20                         strBuilder.AppendLine("       public string " + dr.Table.Columns[i] + "");
21                         strBuilder.AppendLine("         {");
22                         strBuilder.AppendLine("            get { return " + "_" + dr.Table.Columns[i] + "; }");
23                         strBuilder.AppendLine("            set { " + "_" + dr.Table.Columns[i] + " = value; }");
24                         strBuilder.AppendLine("          }");
25                         break;
26                     case "System.Int":
27                         strBuilder.AppendLine("       private Int " + "_" + dr.Table.Columns[i] + ";");
28                         strBuilder.AppendLine("       public Int " + dr.Table.Columns[i] + "");
29                         strBuilder.AppendLine("         {");
30                         strBuilder.AppendLine("            get { return " + "_" + dr.Table.Columns[i] + "; }");
31                         strBuilder.AppendLine("             set { " + "_" + dr.Table.Columns[i] + " = value; }");
32                         strBuilder.AppendLine("         }");
33                         break;
34                     case "System.Int32":
35                         strBuilder.AppendLine("       private Int " + "_" + dr.Table.Columns[i] + ";");
36                         strBuilder.AppendLine("       public Int " + dr.Table.Columns[i] + "");
37                         strBuilder.AppendLine("         {");
38                         strBuilder.AppendLine("            get { return " + "_" + dr.Table.Columns[i] + "; }");
39                         strBuilder.AppendLine("             set { " + "_" + dr.Table.Columns[i] + " = value; }");
40                         strBuilder.AppendLine("         }");
41                         break;
42                     case "System.DateTime":
43                         strBuilder.AppendLine("       private System.DateTime " + "_" + dr.Table.Columns[i] + ";");
44                         strBuilder.AppendLine("       public System.DateTime " + dr.Table.Columns[i] + "");
45                         strBuilder.AppendLine("          {");
46                         strBuilder.AppendLine("             get { return " + "_" + dr.Table.Columns[i] + "; }");
47                         strBuilder.AppendLine("             set { " + "_" + dr.Table.Columns[i] + " = value; }");
48                         strBuilder.AppendLine("          }");
49                         break;
50                     case "System.Decimal":
51                         strBuilder.AppendLine("       private System.Decimal " + "_" + dr.Table.Columns[i] + ";");
52                         strBuilder.AppendLine("       public System.Decimal " + dr.Table.Columns[i] + "");
53                         strBuilder.AppendLine("        {");
54                         strBuilder.AppendLine("            get { return " + "_" + dr.Table.Columns[i] + "; }");
55                         strBuilder.AppendLine("            set { " + "_" + dr.Table.Columns[i] + " = value; }");
56                         strBuilder.AppendLine("         }");
57                         break;
58                     default:
59                         strBuilder.AppendLine("       private string " + "_" + dr.Table.Columns[i] + ";");
60                         strBuilder.AppendLine("       public string " + dr.Table.Columns[i] + "");
61                         strBuilder.AppendLine("        {");
62                         strBuilder.AppendLine("             get { return " + "_" + dr.Table.Columns[i] + "; }");
63                         strBuilder.AppendLine("             set { " + "_" + dr.Table.Columns[i] + " = value; }");
64                         strBuilder.AppendLine("         }");
65                         break;
66                 }
67             }
68             strBuilder.AppendLine(@"
69               }
70                ");
71 
72             #endregion

Model部分

首先我们是生成Model。有了Model才有下面的增删改查的方法。
其实也很简单，dr.Table.Columns[i].DataType.ToString(),我们就是根据DataRow循环table列，判断字段类型，然后根据对应的字段类型封装成model.单选框默认勾选的，这里先去掉勾选，输入表名，点击生成，然后和数据库表对应，看一下效果。

Model 是最实用的，就算以后我们在用mvc或者ABP等其他框架底层用codefirst等orm框架的时候，我们也可以用这种方式生成Model.

六、生成insert方法

  1 public bool InsertAgreement_YNSHigh_Authorize(Model model)
  2         {
  3 
  4             string strSql = @"
  5                INSERT Agreement_YNSHigh_Authorize(
  6                  AYA_Code,
  7                  AYHA_Code,
  8                  Ctg_ID,
  9                  HospitalCode,
 10                  HospitalName,
 11                  HospitalGrad,
 12                  HospitalRegionID,
 13                  DevelopmentLimitTime,
 14                  EffectiveTime,
 15                  MarketingManagementFee,
 16                  BidPrice,
 17                  DeliveryCode,
 18                  DeliveryName,
 19                  AgreeAdjuestType,
 20                  ChangeContent,
 21                  Status,
 22                  DeliveryPrice,
 23                  BasePrice,
 24                  CategoryCommodityName,
 25                  CategorySystemName,
 26                  CategoryCommName,
 27                  CategorySpec,
 28                  Formulation,
 29                  BusinessModel)
 30                  VALUES (
 31                     @AYA_Code,
 32                     @AYHA_Code,
 33                     @Ctg_ID,
 34                     @HospitalCode,
 35                     @HospitalName,
 36                     @HospitalGrad,
 37                     @HospitalRegionID,
 38                     @DevelopmentLimitTime,
 39                     @EffectiveTime,
 40                     @MarketingManagementFee,
 41                     @BidPrice,
 42                     @DeliveryCode,
 43                     @DeliveryName,
 44                     @AgreeAdjuestType,
 45                     @ChangeContent,
 46                     @Status,
 47                     @DeliveryPrice,
 48                     @BasePrice,
 49                     @CategoryCommodityName,
 50                     @CategorySystemName,
 51                     @CategoryCommName,
 52                     @CategorySpec,
 53                     @Formulation,
 54                    @BusinessModel)
 55 
 56                      ";
 57             SqlParameter[] parameters = new SqlParameter[]
 58                                                   {
 59                       new SqlParameter("@AYA_Code", SqlDbType.NVarChar, 255),
 60                      new SqlParameter("@AYHA_Code", SqlDbType.NVarChar, 255),
 61                      new SqlParameter("@Ctg_ID", SqlDbType.NVarChar, 255),
 62                      new SqlParameter("@HospitalCode", SqlDbType.NVarChar, 255),
 63                      new SqlParameter("@HospitalName", SqlDbType.NVarChar, 255),
 64                      new SqlParameter("@HospitalGrad", SqlDbType.NVarChar, 255),
 65                      new SqlParameter("@HospitalRegionID", SqlDbType.NVarChar, 255),
 66                      new SqlParameter("@DevelopmentLimitTime", SqlDbType.DateTime),
 67                      new SqlParameter("@EffectiveTime", SqlDbType.DateTime),
 68                       new SqlParameter("@MarketingManagementFee", SqlDbType.Decimal),
 69                       new SqlParameter("@BidPrice", SqlDbType.Decimal),
 70                      new SqlParameter("@DeliveryCode", SqlDbType.NVarChar, 255),
 71                      new SqlParameter("@DeliveryName", SqlDbType.NVarChar, 255),
 72                      new SqlParameter("@AgreeAdjuestType", SqlDbType.NVarChar, 255),
 73                      new SqlParameter("@ChangeContent", SqlDbType.NVarChar, 255),
 74                      new SqlParameter("@Status", SqlDbType.NVarChar, 255),
 75                       new SqlParameter("@DeliveryPrice", SqlDbType.Decimal),
 76                       new SqlParameter("@BasePrice", SqlDbType.Decimal),
 77                      new SqlParameter("@CategoryCommodityName", SqlDbType.NVarChar, 255),
 78                      new SqlParameter("@CategorySystemName", SqlDbType.NVarChar, 255),
 79                      new SqlParameter("@CategoryCommName", SqlDbType.NVarChar, 255),
 80                      new SqlParameter("@CategorySpec", SqlDbType.NVarChar, 255),
 81                      new SqlParameter("@Formulation", SqlDbType.NVarChar, 255),
 82                      new SqlParameter("@BusinessModel", SqlDbType.NVarChar, 255),
 83                             };
 84             parameters[0].Value = model.AYA_Code;
 85             parameters[1].Value = model.AYHA_Code;
 86             parameters[2].Value = model.Ctg_ID;
 87             parameters[3].Value = model.HospitalCode;
 88             parameters[4].Value = model.HospitalName;
 89             parameters[5].Value = model.HospitalGrad;
 90             parameters[6].Value = model.HospitalRegionID;
 91             parameters[7].Value = model.DevelopmentLimitTime;
 92             parameters[8].Value = model.EffectiveTime;
 93             parameters[9].Value = model.MarketingManagementFee;
 94             parameters[10].Value = model.BidPrice;
 95             parameters[11].Value = model.DeliveryCode;
 96             parameters[12].Value = model.DeliveryName;
 97             parameters[13].Value = model.AgreeAdjuestType;
 98             parameters[14].Value = model.ChangeContent;
 99             parameters[15].Value = model.Status;
100             parameters[16].Value = model.DeliveryPrice;
101             parameters[17].Value = model.BasePrice;
102             parameters[18].Value = model.CategoryCommodityName;
103             parameters[19].Value = model.CategorySystemName;
104             parameters[20].Value = model.CategoryCommName;
105             parameters[21].Value = model.CategorySpec;
106             parameters[22].Value = model.Formulation;
107             parameters[23].Value = model.BusinessModel;
108 
109             using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionString))
110             {
111                 conn.Open();
112                 using (SqlTransaction trans = conn.BeginTransaction())
113                 {
114                     try
115                     {
116                         int i = SqlHelper.ExecuteNonQuery(trans, CommandType.Text, strSql, parameters);
117                         if (i > 0)
118                         {
119                             trans.Commit();
120                             return i > 0;
121                         }
122                         else
123                         {
124                             trans.Rollback();
125                             return false;
126                         }
127                     }
128                     catch (System.Exception e)
129                     {
130                         return false;
131                         trans.Rollback();
132                         throw e;
133                     }
134                 }
135             }
136 
137         }

View Code

平时我们在新增数据的时候，就以Agreement_YNSHigh_Authorize为例，一般都是这样超做的，加上事务，参数化传过来的参数，这样写起来也非常麻烦。我们这里了也对INSERT 做一下封装。

  1    #region 生成插入Insert方法
  2 
  3             #region 生成插入sql语句
  4 
  5             StringBuilder strTmp = new StringBuilder();
  6             try
  7             {
  8                 for (int i = 0; i < dr.Table.Columns.Count; i++)//生成insert 
  9                 {
 10                     if (i == 0)
 11                     {
 12                         strTmp.AppendLine("               INSERT " + Table + "(");
 13                     }
 14                     if (i == dr.Table.Columns.Count - 1)
 15                     {
 16                         strTmp.AppendLine("                 " + dr.Table.Columns[i].ToString() + ")");
 17                     }
 18                     else
 19                     {
 20                         strTmp.AppendLine("                 " + dr.Table.Columns[i].ToString() + ",");
 21                     }
 22                 }
 23 
 24                 for (int i = 0; i < dr.Table.Columns.Count; i++)
 25                 {
 26                     if (i == 0)
 27                     {
 28                         strTmp.AppendLine("                 VALUES " + "(");
 29                     }
 30                     if (i == dr.Table.Columns.Count - 1)
 31                     {
 32                         strTmp.AppendLine("                   @" + dr.Table.Columns[i].ToString() + ")");
 33                     }
 34                     else
 35                     {
 36                         strTmp.AppendLine("                    @" + dr.Table.Columns[i].ToString() + ",");
 37                     }
 38 
 39                 }
 40             }
 41             catch (System.Exception ex)
 42             {
 43 
 44                 throw ex;
 45             }
 46 
 47             #endregion
 48 
 49 
 50 
 51 
 52 
 53             strBuilder.AppendLine("   public bool Insert" + Table + "(Model model)");
 54             strBuilder.AppendLine(@"    {   
 55            ");
 56             strBuilder.AppendLine("                    string strSql = @"");
 57             strBuilder.AppendLine(strTmp.ToString());
 58             strBuilder.AppendLine("                     ";");
 59 
 60             strBuilder.AppendLine(@"                 SqlParameter[] parameters = new SqlParameter[]
 61                                                   {");
 62             //参数类型
 63             for (int i = 0; i < dr.Table.Columns.Count; i++)
 64             {
 65                 string Type = dr.Table.Columns[i].DataType.ToString();
 66                 switch (Type)
 67                 {
 68                     case "System.String":
 69                         strBuilder.AppendLine("                     new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.NVarChar, 255),");
 70                         break;
 71                     case "System.Int":
 72                         strBuilder.AppendLine("                     new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.Int),");
 73                         break;
 74                     case "System.Int32":
 75                         strBuilder.AppendLine("                     new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.Int),");
 76                         break;
 77                     case "System.DateTime":
 78                         strBuilder.AppendLine("                     new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.DateTime),");
 79                         break;
 80                     case "System.Decimal":
 81                         strBuilder.AppendLine("                      new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.Decimal),");
 82                         break;
 83                     default:
 84                         strBuilder.AppendLine("                      new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.NVarChar, 255),");
 85                         break;
 86                 }
 87             }
 88             strBuilder.AppendLine(@"                            };");
 89 
 90             for (int i = 0; i < dr.Table.Columns.Count; i++)
 91             {
 92                 strBuilder.AppendLine("                        parameters[" + i + "].Value =" + "model." + dr.Table.Columns[i] + ";");
 93             }
 94 
 95             strBuilder.AppendLine(@"
 96             using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionString))
 97             {
 98                 conn.Open();
 99                 using (SqlTransaction trans = conn.BeginTransaction())
100                 {
101                     try
102                     {
103                         int i = SqlHelper.ExecuteNonQuery(trans, CommandType.Text, strSql, parameters);
104                           if (i > 0)
105                         {
106                             trans.Commit();
107                             return i > 0;
108                         }
109                         else
110                         {
111                             trans.Rollback();
112                             return false;
113                         }
114                     }
115                     catch (System.Exception e)
116                     {
117                          return false;
118                         trans.Rollback();
119                         throw e;
120                     }
121                   }
122                }
123                ");
124             strBuilder.AppendLine("}");
125 
126             #endregion

View Code

首先是根据sql生成字段和参数字段。这都是很繁琐的工作，而且不能出错。也是对DataRow table的循环和封装处理。需要注意一下转义字符处理，注意对事务的处理。另外update,select,delete的处理方式与insert类似，不在累述，放上代码。

七、update,select,delete

  1  if ((bool)inputSql[4])
  2             {
  3                 returnstr.AppendLine(strBuilder.ToString());
  4             }
  5             strBuilder = new StringBuilder();
  6             #region 生成更新Update 方法
  7 
  8             #region 生成更新Update sql语句
  9 
 10             strTmp = new StringBuilder(); //sql 
 11             try
 12             {
 13                 for (int i = 0; i < dr.Table.Columns.Count; i++)//生成Update 
 14                 {
 15                     if (i == 0)
 16                     {
 17                         strTmp.AppendLine("               Update " + Table + "  SET ");
 18                     }
 19                     if (i == dr.Table.Columns.Count - 1)
 20                     {
 21 
 22 
 23                         strTmp.AppendLine("                 " + dr.Table.Columns[i].ToString() + "=" + "@" + dr.Table.Columns[i].ToString() + " where " + Id + "=" + "@" + Id + "  ");
 24                     }
 25                     else
 26                     {
 27                         strTmp.AppendLine("                  " + dr.Table.Columns[i].ToString() + "=" + "@" + dr.Table.Columns[i].ToString() + ",");
 28                     }
 29                 }
 30             }
 31             catch (System.Exception ex)
 32             {
 33 
 34                 throw ex;
 35             }
 36 
 37             #endregion
 38 
 39 
 40 
 41 
 42             strBuilder.AppendLine("   public bool Update" + Table + "ById(Model model)");
 43             strBuilder.AppendLine(@"    {   
 44            ");
 45             strBuilder.AppendLine("                    string strSql = @"");
 46             strBuilder.AppendLine(strTmp.ToString());
 47             strBuilder.AppendLine("                     ";");
 48 
 49             strBuilder.AppendLine(@"                 SqlParameter[] parameters = new SqlParameter[]
 50                                                   {");
 51             //参数类型
 52             for (int i = 0; i < dr.Table.Columns.Count; i++)
 53             {
 54                 string Type = dr.Table.Columns[i].DataType.ToString();
 55                 switch (Type)
 56                 {
 57                     case "System.String":
 58                         strBuilder.AppendLine("                     new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.NVarChar, 255),");
 59                         break;
 60                     case "System.Int":
 61                         strBuilder.AppendLine("                     new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.Int),");
 62                         break;
 63                     case "System.DateTime":
 64                         strBuilder.AppendLine("                     new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.DateTime),");
 65                         break;
 66                     case "System.Decimal":
 67                         strBuilder.AppendLine("                      new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.Decimal),");
 68                         break;
 69                     default:
 70                         strBuilder.AppendLine("                      new SqlParameter("" + "@" + dr.Table.Columns[i] + "", SqlDbType.NVarChar, 255),");
 71                         break;
 72                 }
 73             }
 74             strBuilder.AppendLine(@"                            };");
 75 
 76             for (int i = 0; i < dr.Table.Columns.Count; i++)
 77             {
 78                 strBuilder.AppendLine("                        parameters[" + i + "].Value =" + "model." + dr.Table.Columns[i] + ";");
 79             }
 80 
 81             strBuilder.AppendLine(@"
 82             using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionString))
 83             {
 84                 conn.Open();
 85                 using (SqlTransaction trans = conn.BeginTransaction())
 86                 {
 87                     try
 88                     {
 89                         int i = SqlHelper.ExecuteNonQuery(trans, CommandType.Text, strSql, parameters);
 90                           if (i > 0)
 91                         {
 92                             trans.Commit();
 93                             return i > 0;
 94                         }
 95                         else
 96                         {
 97                             trans.Rollback();
 98                             return false;
 99                         }
100                     }
101                     catch (System.Exception e)
102                     {
103                         return false;
104                         trans.Rollback();
105                         throw e;
106                     }
107                   }
108                }
109                ");
110             strBuilder.AppendLine("}");
111 
112             #endregion
113 
114             if ((bool)inputSql[5])
115             {
116                 returnstr.AppendLine(strBuilder.ToString());
117             }
118             strBuilder = new StringBuilder();
119             #region 生成查询方法
120 
121             strBuilder.AppendLine("   public DataTable GetDataBy" + Table + "(Model model , int pageNo, int pageSize, ref int iRecordCount)");
122             strBuilder.AppendLine(@"    {    ");
123             strTmp = new StringBuilder();
124             strTmp.AppendLine("WITH temp AS ( SELECT rn =  ROW_NUMBER() OVER (ORDER BY " + Id + "  desc), *FROM  " + Table + " WHERE 1=1 {0} )");
125             strTmp.AppendLine("SELECT *,rc=(select count(1) from temp) FROM temp WHERE rn BETWEEN {1} AND {2}");
126 
127             strBuilder.AppendLine("        List<SqlParameter> parameters = new List<SqlParameter>();");
128             strBuilder.AppendLine("        StringBuilder sqlWhere = new StringBuilder();");
129             for (int i = 0; i < dr.Table.Columns.Count; i++)
130             {
131                 strBuilder.AppendLine("       if (!string.IsNullOrEmpty(model." + dr.Table.Columns[i].ToString() + ".ToString())) ");
132                 strBuilder.AppendLine("       {");
133                 strBuilder.AppendLine("          sqlWhere.Append(" AND " + dr.Table.Columns[i].ToString() + "=@" + dr.Table.Columns[i].ToString() + "");");
134                 strBuilder.AppendLine("          parameters.Add(new SqlParameter("@" + dr.Table.Columns[i].ToString() + "", SqlDbType.NVarChar, 255) { SqlValue = model." + dr.Table.Columns[i].ToString() + " });");
135                 strBuilder.AppendLine("       } ");
136             }
137             strBuilder.AppendLine("                    string strSql = string.Format(@"");
138             strBuilder.AppendLine(strTmp.ToString());
139             strBuilder.AppendLine("                     " ,sqlWhere.ToString(), (pageNo - 1) * pageSize + 1, pageNo * pageSize);");
140 
141             strBuilder.AppendLine(@"    
142 
143                    DataTable dt = SqlHelper.Query(strSql, parameters.ToArray()).Tables[0];
144                   if (dt!=null)
145                    {");
146             strBuilder.AppendLine("        iRecordCount = int.Parse(dt.Rows[0]["" + "rc" + ""].ToString());");
147             strBuilder.AppendLine(@"      return dt;
148                             }
149                            else
150                           {
151                               iRecordCount = 0;
152                             return null;
153                         }
154                 }    ");
155 
156             #endregion
157 
158             if ((bool)inputSql[6])
159             {
160                 returnstr.AppendLine(strBuilder.ToString());
161             }
162             strBuilder = new StringBuilder();
163             #region 生成删除的方法
164 
165             strBuilder.AppendLine("    public bool Delete" + Table + "(string " + Id + ")");
166             strBuilder.AppendLine("   {");
167             strBuilder.AppendLine("        List<SqlParameter> parameters = new List<SqlParameter>();");
168             strTmp = new StringBuilder();
169             strTmp.AppendLine("DELETE " + Table + " WHERE " + Id + "=" + Id + "");
170             strBuilder.AppendLine("                    string strSql = string.Format(@"");
171             strBuilder.AppendLine(strTmp.ToString());
172             strBuilder.AppendLine("                     ";");
173             strBuilder.AppendLine("     int rowAffect =SqlHelper.Query(strSql, parameters.ToArray()).ToInt();;");
174             strBuilder.AppendLine("      return rowAffect > 0 ? true : false;");
175             strBuilder.AppendLine("      }");
176 
177             #endregion
178 
179             if ((bool)inputSql[7])
180             {
181                 returnstr.AppendLine(strBuilder.ToString());
182             }
183             strBuilder = new StringBuilder();

View Code

if ((bool)inputSql[7])主要是对控件值得判断，是否勾选上，也就是是否需要生成改方法。导出的方法主要在公司已经封装好的代码上提取重复代码的，平时我们在做功能的时候只需要写这些代码即可。

八，导出Excel方法及其他

 1         strBuilder.AppendLine(@"     protected void btnExcel_Click(object sender, System.EventArgs e)
 2         {
 3             int intPageNo = 1;
 4             int intPageSize = 65535;
 5             int recordCount = 0;
 6             DataTable dt = GetUnAuthorizeAgreePassedDT( Model model intPageNo, intPageSize, out recordCount); ");
 7             strBuilder.AppendLine("     string strFileName = "" + "导出Excel" + "" + System.DateTime.Now.ToString(" " + "yyyyMMddHHmmss" + "");");
 8             strBuilder.AppendLine(@"        ExcelUtility excelUtil = new ExcelUtility(this, strFileName);
 9             List<ExcelHeader> headerS = new List<ExcelHeader>() { ");
10 
11             for (int i = 0; i < dr.Table.Columns.Count; i++)
12             {
13                 string Type = dr.Table.Columns[i].DataType.ToString();
14                 switch (Type)
15                 {
16                     case "System.DateTime":
17                         strBuilder.AppendLine("           new ExcelHeader() { Name = "字段名称自行补全", DataType = EnumColumnDataType.日期, Width = 15 },");
18                         break;
19                     default:
20                         strBuilder.AppendLine("           new ExcelHeader() { Name = "字段名称自行补全", DataType = EnumColumnDataType.文本, Width = 15 },");
21                         break;
22                 }
23             }
24             strBuilder.AppendLine(@"          };
25             excelUtil.CreateHeader(headerS);
26             if (dt != null && dt.Rows.Count > 0)
27             {
28                 foreach (DataRow dr in dt.Rows)
29                 {
30                     List<string> dataVals = new List<string>() { ");
31 
32 
33             for (int i = 0; i < dr.Table.Columns.Count; i++)
34             {
35                 strBuilder.AppendLine("                            dr[" " + dr.Table.Columns[i] + ""].ToString()  ");
36             }
37 
38             strBuilder.AppendLine(@"          };       
39                     excelUtil.CreateItemRow(dataVals);
40                 }
41             }
42             excelUtil.Export();
43             }
44            "); 
45             #endregion

View Code

另外做了几个功能，但是不是很好用，感兴趣的朋友可以去下载源码看一下。
github地址：https://github.com/Jimmey-Jiang/JWorkHelper

然后看一下生成的代码展示：

  1     public class Model
  2         {
  3 
  4             private string _Team_code;
  5             public string Team_code
  6             {
  7                 get { return _Team_code; }
  8                 set { _Team_code = value; }
  9             }
 10             private string _Team_name;
 11             public string Team_name
 12             {
 13                 get { return _Team_name; }
 14                 set { _Team_name = value; }
 15             }
 16             private string _Team_status;
 17             public string Team_status
 18             {
 19                 get { return _Team_status; }
 20                 set { _Team_status = value; }
 21             }
 22             private string _Team_user;
 23             public string Team_user
 24             {
 25                 get { return _Team_user; }
 26                 set { _Team_user = value; }
 27             }
 28             private System.DateTime _Team_date;
 29             public System.DateTime Team_date
 30             {
 31                 get { return _Team_date; }
 32                 set { _Team_date = value; }
 33             }
 34 
 35         }
 36 
 37 
 38         public bool InsertTeam_(Model model)
 39         {
 40 
 41             string strSql = @"
 42                INSERT Team_(
 43                  Team_code,
 44                  Team_name,
 45                  Team_status,
 46                  Team_user,
 47                  Team_date)
 48                  VALUES (
 49                     @Team_code,
 50                     @Team_name,
 51                     @Team_status,
 52                     @Team_user,
 53                    @Team_date)
 54 
 55                      ";
 56             SqlParameter[] parameters = new SqlParameter[]
 57                                                   {
 58                      new SqlParameter("@Team_code", SqlDbType.NVarChar, 255),
 59                      new SqlParameter("@Team_name", SqlDbType.NVarChar, 255),
 60                      new SqlParameter("@Team_status", SqlDbType.NVarChar, 255),
 61                      new SqlParameter("@Team_user", SqlDbType.NVarChar, 255),
 62                      new SqlParameter("@Team_date", SqlDbType.DateTime),
 63                             };
 64             parameters[0].Value = model.Team_code;
 65             parameters[1].Value = model.Team_name;
 66             parameters[2].Value = model.Team_status;
 67             parameters[3].Value = model.Team_user;
 68             parameters[4].Value = model.Team_date;
 69 
 70             using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionString))
 71             {
 72                 conn.Open();
 73                 using (SqlTransaction trans = conn.BeginTransaction())
 74                 {
 75                     try
 76                     {
 77                         int i = SqlHelper.ExecuteNonQuery(trans, CommandType.Text, strSql, parameters);
 78                         if (i > 0)
 79                         {
 80                             trans.Commit();
 81                             return i > 0;
 82                         }
 83                         else
 84                         {
 85                             trans.Rollback();
 86                             return false;
 87                         }
 88                     }
 89                     catch (System.Exception e)
 90                     {
 91                         return false;
 92                         trans.Rollback();
 93                         throw e;
 94                     }
 95                 }
 96             }
 97 
 98         }
 99 
100         public bool UpdateTeam_ById(Model model)
101         {
102 
103             string strSql = @"
104                Update Team_  SET 
105                   Team_code=@Team_code,
106                   Team_name=@Team_name,
107                   Team_status=@Team_status,
108                   Team_user=@Team_user,
109                  Team_date=@Team_date where Team_code=@Team_code  
110 
111                      ";
112             SqlParameter[] parameters = new SqlParameter[]
113                                                   {
114                      new SqlParameter("@Team_code", SqlDbType.NVarChar, 255),
115                      new SqlParameter("@Team_name", SqlDbType.NVarChar, 255),
116                      new SqlParameter("@Team_status", SqlDbType.NVarChar, 255),
117                      new SqlParameter("@Team_user", SqlDbType.NVarChar, 255),
118                      new SqlParameter("@Team_date", SqlDbType.DateTime),
119                             };
120             parameters[0].Value = model.Team_code;
121             parameters[1].Value = model.Team_name;
122             parameters[2].Value = model.Team_status;
123             parameters[3].Value = model.Team_user;
124             parameters[4].Value = model.Team_date;
125 
126             using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionString))
127             {
128                 conn.Open();
129                 using (SqlTransaction trans = conn.BeginTransaction())
130                 {
131                     try
132                     {
133                         int i = SqlHelper.ExecuteNonQuery(trans, CommandType.Text, strSql, parameters);
134                         if (i > 0)
135                         {
136                             trans.Commit();
137                             return i > 0;
138                         }
139                         else
140                         {
141                             trans.Rollback();
142                             return false;
143                         }
144                     }
145                     catch (System.Exception e)
146                     {
147                         return false;
148                         trans.Rollback();
149                         throw e;
150                     }
151                 }
152             }
153 
154         }
155 
156         public DataTable GetDataByTeam_(Model model, int pageNo, int pageSize, ref int iRecordCount)
157         {
158             List<SqlParameter> parameters = new List<SqlParameter>();
159             StringBuilder sqlWhere = new StringBuilder();
160             if (!string.IsNullOrEmpty(model.Team_code.ToString()))
161             {
162                 sqlWhere.Append(" AND Team_code=@Team_code");
163                 parameters.Add(new SqlParameter("@Team_code", SqlDbType.NVarChar, 255) { SqlValue = model.Team_code });
164             }
165             if (!string.IsNullOrEmpty(model.Team_name.ToString()))
166             {
167                 sqlWhere.Append(" AND Team_name=@Team_name");
168                 parameters.Add(new SqlParameter("@Team_name", SqlDbType.NVarChar, 255) { SqlValue = model.Team_name });
169             }
170             if (!string.IsNullOrEmpty(model.Team_status.ToString()))
171             {
172                 sqlWhere.Append(" AND Team_status=@Team_status");
173                 parameters.Add(new SqlParameter("@Team_status", SqlDbType.NVarChar, 255) { SqlValue = model.Team_status });
174             }
175             if (!string.IsNullOrEmpty(model.Team_user.ToString()))
176             {
177                 sqlWhere.Append(" AND Team_user=@Team_user");
178                 parameters.Add(new SqlParameter("@Team_user", SqlDbType.NVarChar, 255) { SqlValue = model.Team_user });
179             }
180             if (!string.IsNullOrEmpty(model.Team_date.ToString()))
181             {
182                 sqlWhere.Append(" AND Team_date=@Team_date");
183                 parameters.Add(new SqlParameter("@Team_date", SqlDbType.NVarChar, 255) { SqlValue = model.Team_date });
184             }
185             string strSql = string.Format(@"
186 WITH temp AS ( SELECT rn =  ROW_NUMBER() OVER (ORDER BY Team_code  desc), *FROM  Team_ WHERE 1=1 {0} )
187 SELECT *,rc=(select count(1) from temp) FROM temp WHERE rn BETWEEN {1} AND {2}
188 
189                      ", sqlWhere.ToString(), (pageNo - 1) * pageSize + 1, pageNo * pageSize);
190 
191 
192             DataTable dt = SqlHelper.Query(strSql, parameters.ToArray()).Tables[0];
193             if (dt != null)
194             {
195                 iRecordCount = int.Parse(dt.Rows[0]["rc"].ToString());
196                 return dt;
197             }
198             else
199             {
200                 iRecordCount = 0;
201                 return null;
202             }
203         }
204 
205         public bool DeleteTeam_(string Team_code)
206    {
207         List<SqlParameter> parameters = new List<SqlParameter>();
208                     string strSql = string.Format(@"
209 DELETE Team_ WHERE Team_code=Team_code
210 
211                      ";
212      int rowAffect =SqlHelper.Query(strSql, parameters.ToArray()).ToInt();;
213       return rowAffect > 0 ? true : false;
214       }
215 
216         protected void btnExcel_Click(object sender, System.EventArgs e)
217         {
218             int intPageNo = 1;
219             int intPageSize = 65535;
220             int recordCount = 0;
221             DataTable dt = GetUnAuthorizeAgreePassedDT( Model model intPageNo, intPageSize, out recordCount); 
222      string strFileName = "导出Excel" + System.DateTime.Now.ToString(" yyyyMMddHHmmss");
223         ExcelUtility excelUtil = new ExcelUtility(this, strFileName);
224             List<ExcelHeader> headerS = new List<ExcelHeader>() { 
225            new ExcelHeader() { Name = "字段名称自行补全", DataType = EnumColumnDataType.文本, Width = 15 },
226            new ExcelHeader() { Name = "字段名称自行补全", DataType = EnumColumnDataType.文本, Width = 15 },
227            new ExcelHeader() { Name = "字段名称自行补全", DataType = EnumColumnDataType.文本, Width = 15 },
228            new ExcelHeader() { Name = "字段名称自行补全", DataType = EnumColumnDataType.文本, Width = 15 },
229            new ExcelHeader() { Name = "字段名称自行补全", DataType = EnumColumnDataType.日期, Width = 15 },
230           };
231             excelUtil.CreateHeader(headerS);
232             if (dt != null && dt.Rows.Count > 0)
233             {
234                 foreach (DataRow dr in dt.Rows)
235                 {
236                     List<string> dataVals = new List<string>() { 
237                             dr[" Team_code"].ToString()  
238                             dr[" Team_name"].ToString()  
239                             dr[" Team_status"].ToString()  
240                             dr[" Team_user"].ToString()  
241                             dr[" Team_date"].ToString()  
242           };       
243                     excelUtil.CreateItemRow(dataVals);
244                 }
245             }
246             excelUtil.Export();
247             }

View Code

有人说这个版本太麻烦，我就做了T4版本

懒人小工具：T4自动生成Model,Insert,Select,Delete以及导出Excel的方法

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原文地址：https://www.cnblogs.com/anyushengcms/p/7552371.html

懒人小工具1：winform自动生成Model,Insert,Select,Delete以及导出Excel的方法

一、 首先新建一个类库WorkHelper。

二、winform界面设计

三、 资源文件以及解决方案结构。

四、BaseSql类。

五、实体

六、生成insert方法

七、update,select,delete

八，导出Excel方法及其他

一、首先新建一个类库WorkHelper。

三、资源文件以及解决方案结构。