TreeView.AfterSelect Event (System.Windows.Forms)

.NET Framework Class Library

TreeView..::.AfterSelect Event

Occurs after the tree node is selected.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)

Syntax

Visual Basic (Declaration)

Public Event AfterSelect As TreeViewEventHandler

Visual Basic (Usage)

Dim instance As TreeView
Dim handler As TreeViewEventHandler

AddHandler instance.AfterSelect, handler

public event TreeViewEventHandler AfterSelect

Visual C++

public:
 event TreeViewEventHandler^ AfterSelect {
    void add (TreeViewEventHandler^ value);
    void remove (TreeViewEventHandler^ value);
}

JScript

JScript does not support events.

Remarks

This event does not occur when the node is unselected. To detect this occurrence, handle the Control..::.MouseUp event and test the TreeNode..::.IsSelected property.

For more information about handling events, see Consuming Events.

Examples

The following code example demonstrates how to use the TreeViewAction enumeration. To run this example, paste the following code in a form containing a TreeView control named TreeView1. This example requires that TreeView1 is populated with items and the AfterSelect event is connected to the event handler defined in the sample.

Visual Basic

' Handle the After_Select event.
Private Sub TreeView1_AfterSelect(ByVal sender As System.Object, _
    ByVal e As System.Windows.Forms.TreeViewEventArgs) _
        Handles TreeView1.AfterSelect

    ' Vary the response depending on which TreeViewAction
    ' triggered the event. 
    Select Case (e.Action)
        Case TreeViewAction.ByKeyboard
            MessageBox.Show("You like the keyboard!")
        Case TreeViewAction.ByMouse
            MessageBox.Show("You like the mouse!")
    End Select
End Sub

    // Handle the After_Select event.
    private void TreeView1_AfterSelect(System.Object sender, 
        System.Windows.Forms.TreeViewEventArgs e)
    {

        // Vary the response depending on which TreeViewAction
        // triggered the event. 
        switch((e.Action))
        {
            case TreeViewAction.ByKeyboard:
                MessageBox.Show("You like the keyboard!");
                break;
            case TreeViewAction.ByMouse:
                MessageBox.Show("You like the mouse!");
                break;
        }
    }

Visual C++

private:
   // Handle the After_Select event.
   void TreeView1_AfterSelect( System::Object^ /*sender*/, System::Windows::Forms::TreeViewEventArgs^ e )
   {

      // Vary the response depending on which TreeViewAction
      // triggered the event. 
      switch ( (e->Action) )
      {
         case TreeViewAction::ByKeyboard:
            MessageBox::Show( "You like the keyboard!" );
            break;

         case TreeViewAction::ByMouse:
            MessageBox::Show( "You like the mouse!" );
            break;
      }
   }

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

Reference

TreeView Class

TreeView Members

System.Windows.Forms Namespace

TreeNode..::.IsSelected