C# dataTable的linq联合查询，插入到新的dataTable中

[csharp]  view plain  copy

1. //获取要比对的数据  
2.             DataTable dataTable_yh = (DataTable)gridControl1.DataSource;  
3.             DataTable dataTable_tg = (DataTable)gridControl2.DataSource;  
4.             //是否有必要比  
5.             if (dataTable_yh == null || dataTable_yh == null)  
6.             {  
7.                 MessageBox.Show("没有需要比较的数据");  
8.                 return;  
9.             }  

[csharp]  view plain  copy

1. //整车整备质量不一致  
2.             var zczbzlData = from d in dataTable_yh.AsEnumerable()  
3.                              join dd in dataTable_tg.AsEnumerable()  
4.                              on d.Field<string>("CLXH") equals dd.Field<string>("CLXH")  
5.                              where d.Field<string>("RLLX") == dd.Field<string>("RLLX")  
6.                              && d.Field<string>("ZCZBZL") != dd.Field<string>("ZCZBZL")  
7.                              select new  
8.                              {  
9.                                  VIN = d.Field<string>("VIN"),  
10.                                  CLXH = d.Field<string>("CLXH"),  
11.                                  RLLX = d.Field<string>("RLLX"),  
12.                                  YH_ZCZBZL = d.Field<string>("ZCZBZL"),  
13.                                  TG_ZCZBZL = dd.Field<string>("ZCZBZL")  
14.                              };  
15.             this.gcTable1.DataSource = zczbzlData.ToList();  
16.             //油耗实际值不一致  
17.             var zhgkData = from d in dataTable_yh.AsEnumerable()  
18.                              join dd in dataTable_tg.AsEnumerable()  
19.                              on d.Field<string>("CLXH") equals dd.Field<string>("CLXH")  
20.                              where d.Field<string>("RLLX") == dd.Field<string>("RLLX")  
21.                              && d.Field<string>("ZHGK") != dd.Field<string>("ZHGK")  
22.                              select new  
23.                              {  
24.                                  VIN = d.Field<string>("VIN"),  
25.                                  CLXH = d.Field<string>("CLXH"),  
26.                                  RLLX = d.Field<string>("RLLX"),  
27.                                  YH_ZHGK = d.Field<string>("ZHGK"),  
28.                                  TG_ZHGK = dd.Field<string>("ZHGK")  
29.                              };  
30.             this.gcTable2.DataSource = zhgkData.ToList();  
31.             //通告中不存在  
32.             var cllxArr = dataTable_tg.AsEnumerable().Select(d => d.Field<string>("CLXH")).ToArray();  
33.             var rllxArr = dataTable_tg.AsEnumerable().Select(d => d.Field<string>("RLLX")).ToArray();  
34.             var errorData = from d in dataTable_yh.AsEnumerable()  
35.                             where !cllxArr.Contains(d.Field<string>("CLXH"))  
36.                             || !rllxArr.Contains(d.Field<string>("RLLX"))  
37.                             select new  
38.                             {  
39.                                 VIN = d.Field<string>("VIN"),  
40.                                 CLXH = d.Field<string>("CLXH"),  
41.                                 RLLX = d.Field<string>("RLLX")  
42.                             };  
43.             this.gcTable3.DataSource = errorData.ToList();  

[csharp]  view plain  copy

1. //比较完初始选中的tab页  
2.             int selectTabIndex = 1;  
3.             if (zczbzlData.Count() < 1)   
4.             {  
5.                 selectTabIndex = 2;  
6.                 if (zhgkData.Count() < 1)   
7.                 {  
8.                     selectTabIndex = 3;  
9.                     if (errorData.Count() < 1)  
10.                     {  
11.                         MessageBox.Show("数据一致");  
12.                         return;  
13.                     }  
14.                 }  
15.             }  
16.             xtraTabControl1.SelectedTabPageIndex = selectTabIndex;