DesignerTransactionCloseEventHandler
Delegate
Definition
Represents the method that handles the TransactionClosed and TransactionClosing events of a designer.
[System.Runtime.InteropServices.ComVisible(true)]
public delegate void DesignerTransactionCloseEventHandler(object sender, DesignerTransactionCloseEventArgs e);
Parameters
- sender
The source of the event.
- e
A DesignerTransactionCloseEventArgs that contains the event data.
- Inheritance
- Attributes
Examples
The following example demonstrates registering a DesignerTransactionCloseEventHandler and handling the TransactionClosing and TransactionClosed events.
public:
void LinkDesignerTransactionCloseEvent( IDesignerHost^ host )
{
// Registers an event handler for the designer TransactionClosing and TransactionClosed events.
host->TransactionClosing += gcnew DesignerTransactionCloseEventHandler(
this, &DesignerTransactionCloseEventHandlerExample::OnTransactionClose );
host->TransactionClosed += gcnew DesignerTransactionCloseEventHandler(
this, &DesignerTransactionCloseEventHandlerExample::OnTransactionClose );
}
private:
void OnTransactionClose( Object^ sender, DesignerTransactionCloseEventArgs^ e )
{
// Displays transaction close information on the console.
if ( e->TransactionCommitted )
{
Console::WriteLine( "Transaction has been committed." );
}
else
{
Console::WriteLine( "Transaction has not yet been committed." );
}
}
public void LinkDesignerTransactionCloseEvent(IDesignerHost host)
{
// Registers an event handler for the designer TransactionClosing and TransactionClosed events.
host.TransactionClosing += new DesignerTransactionCloseEventHandler(this.OnTransactionClose);
host.TransactionClosed += new DesignerTransactionCloseEventHandler(this.OnTransactionClose);
}
private void OnTransactionClose(object sender, DesignerTransactionCloseEventArgs e)
{
// Displays transaction close information on the console.
if( e.TransactionCommitted )
Console.WriteLine("Transaction has been committed.");
else
Console.WriteLine("Transaction has not yet been committed.");
}
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
Remarks
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.