C# DataTable 創建臨時表

/// <summary>
        /// 創建臨時表
        /// </summary>
        private DataTable CreatDT()
        {
            DataTable dtKM = new DataTable();
            DataColumn dataColumn1 = new DataColumn("fid", typeof(string));
            dtKM.Columns.Add(dataColumn1);

            DataColumn dataColumn2 = new DataColumn("funit", typeof(string));
            dtKM.Columns.Add(dataColumn2);

            return dtKM;         
        }