The Button class inherits directly from the System.Windows.Controls.Primitives..::.ButtonBase class.

Content Model: Button is a ContentControl. Its content property is Content. For more information on the content model for Button, see Controls Content Model Overview.

Handle the ButtonBase..::.Click event to respond when the user clicks a Button.

The OnMouseLeftButtonDown method marks the MouseLeftButtonDown event as handled. To respond to the MouseLeftButtonDown event, attach an event handler to the PreviewMouseLeftButtonDown event, or call AddHandler(RoutedEvent, Delegate, Boolean) with handledEventsToo set to true.

Dependency properties for this control might be set by the control’s default style. If a property is set by a default style, the property might change from its default value when the control appears in the application. The default style is determined by which desktop theme is used when the application is running. For more information, see Themes.

The following example shows three buttons that respond to clicks in three different ways.

• Hover: the first button changes colors when the user hovers with the mouse over the button.

• Press: the second button requires that the mouse be pressed while the mouse pointer is over the button.

• Release: the third does not reset the background color of the buttons until the mouse is pressed and released on the button.

<Button Name="btn1" Background="Pink" 
        BorderBrush="Black" BorderThickness="1" 
        Click="OnClick1" ClickMode="Hover">
  ClickMe1
</Button>

<Button Name="btn2" Background="LightBlue" 
        BorderBrush="Black" BorderThickness="1" 
        Click="OnClick2" ClickMode="Press">
  ClickMe2
</Button>

<Button Name="btn3" 
        Click="OnClick3" ClickMode="Release">
  Reset
</Button>

Private Sub OnClick1(ByVal sender As Object, ByVal e As RoutedEventArgs)
    btn1.Background = Brushes.LightBlue
End Sub

Private Sub OnClick2(ByVal sender As Object, ByVal e As RoutedEventArgs)
    btn2.Background = Brushes.Pink
End Sub

Private Sub OnClick3(ByVal sender As Object, ByVal e As RoutedEventArgs)
    btn1.Background = Brushes.Pink
    btn2.Background = Brushes.LightBlue
End Sub

        void OnClick1(object sender, RoutedEventArgs e)
        {
            btn1.Background = Brushes.LightBlue;
        }

        void OnClick2(object sender, RoutedEventArgs e)
        {
            btn2.Background = Brushes.Pink;
        }

        void OnClick3(object sender, RoutedEventArgs e)
        {
            btn1.Background = Brushes.Pink;
            btn2.Background = Brushes.LightBlue;
        }

More Code

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

.NET Framework

Reference

Other Resources