System.Data.DataSet objSet = new DataSet(); System.Data.DataTable objTable = new DataTable("test"); objTable.Columns.Add("CodeID", typeof(string)); objTable.Columns.Add("FilterCitem ", typeof(string)); objTable.Columns.Add("FilterSqlStr", typeof(string)); System.Data.DataRow dr = objTable.NewRow(); dr[0] = "row0andcol0"; dr[1] = "row2andcol2"; dr[2] = "row3andcol3"; objTable.Rows.Add(dr); objSet.Tables.Add(objTable);