DataTable中DataRow检查重复记录，去重复

Posted 2022-05-10 棉晗榜

 foreach (DataRow row in DataTable1.Rows)
 
     DataRow dataRow = DataTable2.NewRow();
     dataRow.ItemArray = row.ItemArray;

     //检查记录重复了？2022-5-6 09:29:01           
     DataTable2.PrimaryKey =new DataColumn[]  DataTable2.Columns[0] ;
     bool right= DataTable2.Rows.Contains(row.ItemArray.First());
     if (!right)
     
         DataTable2.Rows.InsertAt(dataRow, 0);