dataGridView 数据绑定

   #region  在datagridview中显示dt
        private   void  display(DataGridView dgv,DataTable dt)
       {
           dgv.Rows.Clear();
            if  (dt  !=   null )
           {
                object [] item  =   new   object [dt.Columns.Count];
                for  ( int  i  =   0 ; i  <  dt.Rows.Count; i ++ )
               {
                    for  ( int  j  =   0 ; j  <  dt.Columns.Count; j ++ )
                   {
                       item[j]  =  dt.Rows[i][j];
                   }
                   dgv.Rows.Add(item);
               }
           }
           dgv.Update();

       }
        #endregion