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TreeViewAction Enumeration

Specifies the action that raised a TreeViewEventArgs event.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public enum TreeViewAction
public enum TreeViewAction
public enum TreeViewAction
 Member nameDescription
Supported by the .NET Compact FrameworkByKeyboardThe event was caused by a keystroke. 
Supported by the .NET Compact FrameworkByMouseThe event was caused by a mouse operation. 
Supported by the .NET Compact FrameworkCollapseThe event was caused by the TreeNode collapsing. 
Supported by the .NET Compact FrameworkExpandThe event was caused by the TreeNode expanding. 
Supported by the .NET Compact FrameworkUnknownThe action that caused the event is unknown. 

This enumeration is used by members such as the TreeViewEventArgs constructor.

The following code example demonstrates how to use the TreeView.AfterSelect event and the TreeViewAction enumeration. To run the example paste the following code in a form containing a TreeView control named TreeView1. This example assumes TreeView1 is populated with items and the TreeView.AfterSelect event is connected to the event-handling method defined in the sample.

// 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;
    }
}

// Handle the After_Select event.
private void treeView1_AfterSelect(Object sender,
    System.Windows.Forms.TreeViewEventArgs e)
{
    // Vary the response depending on which TreeViewAction
    // triggered the event. 
    switch (e.get_Action()) {
        case TreeViewAction.ByKeyboard:
            MessageBox.Show("You like the keyboard!");
            break;
        case TreeViewAction.ByMouse:
            MessageBox.Show("You like the mouse!");
            break;
    }
} //treeView1_AfterSelect

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

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0
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