Use Two repeat buttons that increase and decrease a numerical value. : RepeatButton « Windows Presentation Foundation « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Windows Presentation Foundation
3. RepeatButton

<DockPanel xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="RepeatButtons.Pane1">
  <StackPanel>
      <RepeatButton Width="100" DockPanel.Dock="Top" 
                    Delay="500" Interval="100" 
                    Click="Increase">
        Increase
      </RepeatButton>
      <TextBlock Name="valueText" 
                 Width="100" DockPanel.Dock="Top" 
                 TextAlignment="Center" FontSize="16">
        0
      </TextBlock>

      <RepeatButton Width="100" DockPanel.Dock="Top" 
                    Delay="500" Interval="100" 
                    Click="Decrease">
        Decrease
      </RepeatButton>
    </StackPanel>
</DockPanel>
//File:Window.xaml.cs


using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Data;

namespace RepeatButtons
{
    public partial class Pane1 : DockPanel
    {
        void Increase(object sender, RoutedEventArgs e)
        {
            Int32 Num = Convert.ToInt32(valueText.Text);

            valueText.Text = ((Num + 1).ToString());
        }

        void Decrease(object sender, RoutedEventArgs e)
        {
            Int32 Num = Convert.ToInt32(valueText.Text);

            valueText.Text = ((Num - 1).ToString());
        }
    }
}

24.5.RepeatButton
	24.5.1.	Set Delay and Interval for RepeatButton
	24.5.2.	Use Two repeat buttons that increase and decrease a numerical value.
	24.5.3.	RepeatButtons have their delay properties set to 500 milliseconds and their interval properties set to 100.
	24.5.4.	Set the slider value with RepeatButton