DataSet ds = new DataSet(); ds = db1.ExecuteDataSet(command1); ds.DataSetName = "Menus"; ds.Tables[0].TableName = "Menu"; DataRelation relation = new DataRelation("ParentChild", ds.Tables["Menu"].Columns["MenuID"], ds.Tables["Menu"].Columns["ParentID"]., true); relation.Nested = true; ds.Relations.Add(relation); xmlDataSource.Data = ds.GetXml();
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