To duplicate data processing of the dataset

After duplicate data to be processed in the dataset, the write, is used to keep
        /// <Summary>
        /// Gets a new fixed columns do not overlap the DataTable
        /// </ Summary>
        /// <param name = " dt "> containing duplicated data the DataTable </ param>
        /// <param name =" colName "> duplicate column names need to verify </ param>
        /// <Returns> new DataTable, colName columns are not repeated, tabular unchanged </ Returns>
        Private the DataTable GetDistinctTable (the DataTable dt, String colName)
        {
            the DataView DV = dt.DefaultView;
            the DataTable dtCardNo = dv.ToTable (to true, colName);
            the DataTable Pointdt the DataTable new new = ();
            Pointdt = dv.ToTable ();
            Pointdt.Clear ();
            for (int I = 0; I <dtCardNo.Rows.Count;i++)
            {
                DataRow dr = dt.Select(colName + "='" + dtCardNo.Rows[i][0].ToString() + "'")[0];
                Pointdt.Rows.Add(dr.ItemArray);
            }
            return Pointdt;
        }

Reproduced in: https: //www.cnblogs.com/zhangchenliang/archive/2009/12/30/1636094.html