Infragistics logo
메뉴
.NET and JavaScript UI Controls
Version

Handling Invalid Cell Input

InvalidValueBehavior Property

The InvalidValueBehavior property lets you easily specify the behavior that occurs when the user attempts to leave a cell after an invalid value is entered. For example, you can specify that WinGrid™ reverts the value back to the original value and cell is no longer in "edit" mode. The InvalidValueBehavior property is exposed on the Override and Column objects. The following code shows you how to set this property.

In Visual Basic:

Imports Infragistics.Win.UltraWinGrid
...
Private Sub UltraGrid1_InitializeLayout(ByVal sender As Object, _
  ByVal e As Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs) _
  Handles ultraGrid1.InitializeLayout
    ' Set the property on the display layout's override so it affects the whole WinGrid.
    Me.ultraGrid1.DisplayLayout.Override.InvalidValueBehavior = _
      InvalidValueBehavior.RevertValue
    ' You can override the property on a specific column.
    Me.ultraGrid1.DisplayLayout.Bands(0).Columns(0).InvalidValueBehavior = _
      InvalidValueBehavior.RetainValueAndFocus
End Sub

In C#:

using Infragistics.Win.UltraWinGrid;
...
private void ultraGrid1_InitializeLayout(object sender,
  Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
{
	// Set the property on the display layout's override so it affects the whole WinGrid.
	this.ultraGrid1.DisplayLayout.Override.InvalidValueBehavior =
	  InvalidValueBehavior.RevertValue;
	// You can override the property on a specific column.
	this.ultraGrid1.DisplayLayout.Bands[0].Columns[0].InvalidValueBehavior =
	  InvalidValueBehavior.RetainValueAndFocus;
}

CellDataError Event

The InvalidValueBehavior property simply provides the default values for RestoreOriginalValue and the StayInEditMode properties of the CellDataErrorEventArgs of the CellDataError event. Therefore the alternative to using InvalidValueBehavior property is to use CellDataError event. CellDataErrorEventArgs also exposes RaiseErrorEvent property that lets you prevent the WinGrid from displaying the error message box.

In Visual Basic:

Imports Infragistics.Win.UltraWinGrid
...
Private Sub UltraGrid1_CellDataError(ByVal sender As Object, _
  ByVal e As Infragistics.Win.UltraWinGrid.CellDataErrorEventArgs) _
  Handles ultraGrid1.CellDataError
    ' Prevent the message box from displaying.
    e.RaiseErrorEvent = False
    ' Revert back to the original value.
    e.RestoreOriginalValue = True
    ' Stay in the same cell.
    e.StayInEditMode = True
End Sub

In C#:

using Infragistics.Win.UltraWinGrid;
...
private void ultraGrid1_CellDataError(object sender,
  Infragistics.Win.UltraWinGrid.CellDataErrorEventArgs e)
{
	// Prevent the message box from displaying.
	e.RaiseErrorEvent = false;
	// Revert back to the original value.
	e.RestoreOriginalValue = true;
	// Stay in the same cell.
	e.StayInEditMode = true;
}