[boudyonline]

جرب الكود التالي :

كود :

Private Sub myDataGridView_CellValidating(ByVal sender As Object,
              ByVal e As DataGridViewCellValidatingEventArgs)
              Handles myDataGridView.CellValidating
   If myDataGridView.Item(e.ColumnIndex, e.RowIndex).Value Is Nothing Then
       ' Show the user a message
       MessageBox.Show("You have left the cell empty")

       ' Fail validation (prevent them from leaving the cell)
       e.Cancel = True
   End If
End Sub