DesignerTransactionCloseEventHandler Delegate

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

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

'Declaration
<ComVisibleAttribute(True)> _
Public Delegate Sub DesignerTransactionCloseEventHandler ( _
	sender As Object, _
	e As DesignerTransactionCloseEventArgs _
)
'Usage
Dim instance As New DesignerTransactionCloseEventHandler(AddressOf HandlerMethod)
/** @delegate */
/** @attribute ComVisibleAttribute(true) */ 
public delegate void DesignerTransactionCloseEventHandler (
	Object sender, 
	DesignerTransactionCloseEventArgs e
)
Not applicable.

Parameters

sender

The source of the event.

e

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 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.")
    Else
        Console.WriteLine("Transaction has not yet been committed.")
    End If
End Sub

public void LinkDesignerTransactionCloseEvent(IDesignerHost host)
{
    // Registers an event handler for the designer TransactionClosing and 
    // TransactionClosed events.
    host.add_TransactionClosing(new DesignerTransactionCloseEventHandler(
        this.OnTransactionClose));
    host.add_TransactionClosed(new DesignerTransactionCloseEventHandler(
        this.OnTransactionClose));
} //LinkDesignerTransactionCloseEvent

private void OnTransactionClose(Object sender, 
    DesignerTransactionCloseEventArgs e)
{
    // Displays transaction close information on the console.           
    if (e.get_TransactionCommitted()) {
        Console.WriteLine("Transaction has been committed.");
    }
    else {
        Console.WriteLine("Transaction has not yet been committed.");
    }
} //OnTransactionClose 

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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