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TreeViewAction Enum

Definition

Specifies the action that raised a TreeViewEventArgs event.

C#
public enum TreeViewAction
Inheritance
TreeViewAction

Fields

Name Value Description
Unknown 0

The action that caused the event is unknown.

ByKeyboard 1

The event was caused by a keystroke.

ByMouse 2

The event was caused by a mouse operation.

Collapse 3

The event was caused by the TreeNode collapsing.

Expand 4

The event was caused by the TreeNode expanding.

Examples

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.

C#
// 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;
    }
}

Remarks

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

Applies to

Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

See also