如何筛选C＃中的两个DataTable？

Question

如何筛选C＃中的两个表？表一包含完整数据和表二包含表一的一些内容？

Answer 1

你究竟想干什么（从你的问题中不清楚）？取table1，过滤它，然后将结果传递给table2？ Then：

DataView dv = table1.AsDataView(); 
dv.RowFilter = fexpression; // for example "MyID = 3" 
DataTable table2 = dv.ToTable(); 

// If you want typed datatable, you can do it like this (although there are other ways): 
MyTypedDataTable table2 = new MyTypedDataTable(); 
DataTable tempTable = dv.ToTable(); 
table2.Merge(tempTable);