 combinedrows = from dt0 in DsResults.Tables[0].AsEnumerable()                            join dt0 in DsResults.Tables[0].AsEnumerable() on dt0.Field<string>("MethodName") equals dt0.Field<string>("MethodName")                            select new { dt0, dt0 };         DataTable finaldt = new DataTable("FinalTable");         finaldt.Columns.Add(new DataColumn("sp",typeof(string)));         finaldt.Columns.Add(new DataColumn("Method",typeof(string)));         finaldt.Columns.Add(new DataColumn("Class",typeof(string)));         finaldt.Columns.Add(new DataColumn("BLLMethod",typeof(string)));         DataRow newrow = finaldt.NewRow();         