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  • SQL之datatable中的数据进行操作(Westcon借测协议报表)

    通过SQL语句查出来,以ls.id升序排列,number降序排列,并放在datatable里

     string sql = string.Empty;
                    sql = string.Format(@"SELECT ls.id, CONVERT(varchar(10),ls.create_time,120) AS create_time,ls.TotalStatusSchema,  SUBSTRING ( ISNULL(ls.number,'9999999999') , 7 , 99 ) as Sort,ISNULL(ls.number,'待定') as number,
    ISNULL( a.AreaName,'未知')AS AreaName,[dbo].[aspnet_x_GetUserProfileProperty]('/',ls.create_user,'NameEn')as create_user,
    ls.company_name,
    ls.user_company_name,ls.rent_name,d.devicename,d.devicemodel,d.devicesn,CONVERT(varchar(10),ls.startdate,120) AS start_date,
    CONVERT(varchar(10),ls.end_date,120) AS end_date,CONVERT(varchar(10),ls.return_date,120) AS return_date,
    DATEDIFF(DAY,getdate(),ls.end_date) AS countDay ,ls.statue,ls.contact_name,
    ls.contact_mobile,ls.contact_mail,ls.logistics_number
    ,case when charindex('纸质协议',ls.files_status) > 0 then '纸质协议' Else '' end pod
    ,case when charindex('送货单',ls.files_status) > 0 then '送货单' Else '' end txt
    FROM v_Lease ls INNER JOIN v_Device d ON d.rent_id=ls.id
            LEFT OUTER JOIN v_Area a ON a.NAME=ls.create_user
            where ls.TotalStatusSchema<>'draft' {0}  order by ls.id asc,number desc   ", FilterConditions);
                    string content = "";
                    DataTable dt = access.ExecuteTable(sql);  

    声明一个泛型数组,对dt的数据进行循环和判断操作

      List<string> arr = new List<string>();
    
                    for (int i = 0; i < dt.Rows.Count; i++)
                    {
                //判断TotalStatueShchema=='Work' ,排除第一个条件
    if (dt.Rows[i]["TotalStatusSchema"].ToString()== "Work") { dt.Rows[i]["statue"] = "取消"; } else {
                  //判断id是否有包含的,
    if (arr.Contains(dt.Rows[i]["id"].ToString())) {
                     //如果有就取第一条   dt.Rows[i][
    "statue"] = "续签"; } else {
                      //其他的根据条件做相应的操作
    if (dt.Rows[i]["TotalStatusSchema"].ToString() == "done") { dt.Rows[i]["statue"] = "还回"; } else if (dt.Rows[i]["TotalStatusSchema"].ToString() == "WorkflowAbort") { dt.Rows[i]["statue"] = "取消"; } else { dt.Rows[i]["statue"] = "测试中"; } arr.Add(dt.Rows[i]["id"].ToString()); } } }

    新建一个datatable,将Sort这个列转换成int类型,进行升序排列,最后将数据插入到dt中

     DataTable dtnew = dt.Clone();
                    dtnew.Columns["Sort"].DataType = typeof(int);
                    foreach (DataRow s in dt.Rows)
                    {
                        dtnew.ImportRow(s);
                    }
                    dt.DefaultView.Sort = "Sort ASC";
                    dt = dt.DefaultView.ToTable();    
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  • 原文地址:https://www.cnblogs.com/weixin18/p/9758888.html
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