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

Member nameDescription
ByKeyboard

The event was caused by a keystroke.

ByMouse

The event was caused by a mouse operation.

Collapse

The event was caused by the TreeNode collapsing.

Expand

The event was caused by the TreeNode expanding.

Unknown

The 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;
	}
}

.NET Framework
Available since 1.1
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