DesignerTransactionCloseEventHandler Delegate


Represents the method that handles the TransactionClosed and TransactionClosing events of a designer.

Namespace:   System.ComponentModel.Design
Assembly:  System (in System.dll)

<HostProtectionAttribute(SecurityAction.LinkDemand, SharedState := True)>
Public Delegate Sub DesignerTransactionCloseEventHandler (
	sender As Object,
	e As DesignerTransactionCloseEventArgs


Type: System.Object

The source of the event.

Type: System.ComponentModel.Design.DesignerTransactionCloseEventArgs

A DesignerTransactionCloseEventArgs that contains the event data.

When you create a DesignerTransactionCloseEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event-handler delegates, see NIB: Events and Delegates.

The following example demonstrates registering a DesignerTransactionCloseEventHandler and handling the TransactionClosing and TransactionClosed events.

Public Sub LinkDesignerTransactionCloseEvent(ByVal host As IDesignerHost)
    ' Registers an event handler for the designer TransactionClosing 
    ' and TransactionClosed events.
    AddHandler host.TransactionClosing, AddressOf Me.OnTransactionClose
    AddHandler host.TransactionClosed, AddressOf Me.OnTransactionClose
End Sub

Private Sub OnTransactionClose(ByVal sender As Object, ByVal e As DesignerTransactionCloseEventArgs)
    ' Displays transaction close information on the console.           
    If e.TransactionCommitted Then
        Console.WriteLine("Transaction has been committed.")
        Console.WriteLine("Transaction has not yet been committed.")
    End If
End Sub

.NET Framework
Available since 1.1
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