Create Event That is Fired When RepeatButtons are Released

Environment

Product RadNumericUpDown for WPF

Description

How to receive only one notification, when the user releases the RepeatButton in a RadNumericUpDown.

Solution

Inherit the RadNumericUpDown control and add a handler for the MouseLeftButtonUp event of the RepeatButtons within the control. In that event handler, raise a custom RoutedEvent.

public class MyNumericUpDown : RadNumericUpDown 
{ 
    public MyNumericUpDown() 
    { 
        this.AddHandler(RepeatButton.MouseLeftButtonUpEvent, new MouseButtonEventHandler(IncreaseDecreaseButton_MouseLeftButtonUp), true); 
    } 
 
    private void IncreaseDecreaseButton_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) 
    { 
        this.RaiseFinalValueChangedEvent(); 
    } 
 
    public static readonly RoutedEvent FinalValueChangedEvent = EventManager.RegisterRoutedEvent( 
    "FinalValueChanged", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MyNumericUpDown)); 
 
 
    public event RoutedEventHandler FinalValueChanged 
    { 
        add { AddHandler(FinalValueChangedEvent, value); } 
        remove { RemoveHandler(FinalValueChangedEvent, value); } 
    } 
 
    void RaiseFinalValueChangedEvent() 
    { 
        RoutedEventArgs newEventArgs = new RoutedEventArgs(MyNumericUpDown.FinalValueChangedEvent); 
        RaiseEvent(newEventArgs); 
    } 
} 
If the NoXaml dlls are used, the custom control's style should be based on the default one like so:

    <Style TargetType="local:MyNumericUpDown" BasedOn="{StaticResource RadNumericUpDownStyle}" /> 
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