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this.gvUsers.DataSourceID = "odsUserByRoleId";
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{
this.gvUsers.DataSourceID = "odsUser";
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DataTable table1 = new DataTable();
DataColumn c1 = new DataColumn("id1");
table.Columns.Add(c1);
DataColumn c2 = new DataColumn("id2");
table1.Columns.Add(c2);
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