Events

Updated on Mar 26, 2026

The Buttons expose a set of events that are raised on different occasions.

• Click—Fires when the button is clicked. This event is exposed by all buttons from the suite.

Click event handler

C#

	private void RadButton_Click(object sender, RoutedEventArgs e)
	{
	}

• Checked—Fires when a toggle-based button is checked. This event is exposed by RadToggleButton, RadRadionButton and RadSplitButton.

Checked event handler

C#

private void RadToggleButton_Checked(object sender, RoutedEventArgs e)
{
}

• Unchecked—Fires when a toggle-based button is unchecked. This event is exposed by RadToggleButton, RadRadionButton and RadSplitButton.

Unchecked event handler

C#

private void RadToggleButton_Unchecked(object sender, RoutedEventArgs e)
{
}

• Indeterminate—Fires when a toggle-based button goes in indeterminate state. This event is exposed by RadToggleButton and RadRadionButton.

Indeterminate event handler

C#

private void RadToggleButton_Indeterminate(object sender, RoutedEventArgs e)
{
}

• DropDownOpening—Fires when the drop down content of a drop-down-based button is about to open. This event is exposed by RadDropDownButton and RadSplitButton.

DropDownOpening event handler

C#

private void RadToggleButton_DropDownOpening(object sender, RoutedEventArgs e)
{
}

• DropDownOpened—Fires when the drop down content of a drop-down-based button gets opened. This event is exposed by RadDropDownButton and RadSplitButton.

DropDownOpened event handler

C#

private void RadToggleButton_DropDownOpened(object sender, RoutedEventArgs e)
{
}

• DropDownClosed—Fires when the drop down content of a drop-down-based button gets closed. This event is exposed by RadDropDownButton and RadSplitButton.

DropDownClosed event handler

C#

private void RadToggleButton_DropDownClosed(object sender, RoutedEventArgs e)
{
}

See Also

• Getting Started
• Commands