C# DataView操作DataTable

1、DataView篩選數據

//假設有一個DataTable數據
DataTable dt = new DataTable();
//DataTable轉成DefaultView
DataView dv = dt.DefaultView;
dv.RowFilter = "用戶角色 = '學員'";
//得到篩選后的數據，並轉成DataTable
DataTable newTable = dv.ToTable();

2、DataView排列數據

//正序
dv.Sort = "ID asc";
//倒序
dv.Sort = "ID desc";
//多個排序
view.Sort = "ID DESC,Name ASC";

3、DataView其他篩選

//按搜索條件，將DataView中符合條件的行，檢索出來，與數據庫用sql查詢作用一致。
dv.RowFilter = "Name like '*山東*'";
//查詢條件大於
dv.RowFilter = "Name > '5'";
//查詢條件 in
dv.RowFilter = "ID in (1,3,5,7)";