BeforeEnterEditMode イベント

Private Sub UltraGrid1_BeforeEnterEditMode( _
   ByVal sender As System.Object, _
   ByVal e As System.ComponentModel.CancelEventArgs) _
   Handles UltraGrid1.BeforeEnterEditMode
   If Me.UltraGrid1.ActiveCell Is Nothing Then Return
   'Perform this action only on the "Bonus" column:
   If Me.UltraGrid1.ActiveCell.Column.Key <> "Bonus" Then Return
   'Extract the Employee object from the Current Row:
   Dim theEmployee As Employee = _
      DirectCast(Me.UltraGrid1.ActiveCell.Row.ListObject, Employee)
   'Using custom business logic, determine if we should
   'allow the "Bonus" column to allow editing:
   If BusinessLogicManager.EmpDeservesBonus(theEmployee) = False Then
      e.Cancel = True
   End If
End Sub

private void ultraGrid1_BeforeEnterEditMode(
   object sender, CancelEventArgs e)
{
   if (this.ultraGrid1.ActiveCell == null) return;
   //Perform this action only on the "Bonus" column:
   if (this.ultraGrid1.ActiveCell.Column.Key != "Bonus") return;
   //Extract the Employee object from the Current Row:
   Employee theEmployee =
      this.ultraGrid1.ActiveCell.Row.ListObject as Employee;
   //Using custom business logic, determine if we should
   //allow the "Bonus" column to allow editing:
   if (BusinessLogicManager.EmpDeservesBonus(theEmployee) == false)
   {
      e.Cancel = true;
   }
}