手动创建DataTable并添加数据

DataTable dt=new DataTable();
DataColumn dc=dt.Columns.Add("OBJECTID",Type.GetType("System.String"));
dc = dt.Columns.Add("YDDW", Type.GetType("System.String"));
dc = dt.Columns.Add("XMMC", Type.GetType("System.String"));

DataRow dr = dt.NewRow();
                dr["OBJECTID"] = strOID;
                dr["YDDW"] = strYDDW;
                dr["XMMC"] = strXMMC;
                dt.Rows.Add(dr);