xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="WPF" Width="220" Height="104" >
Start
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//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Threading;
namespace WpfApplication1
{
public partial class Window1 : Window
{
private bool continueCalculating = false;
public Window1() : base()
{
InitializeComponent();
}
private void StartStop_Click(object sender, RoutedEventArgs e)
{
if(continueCalculating)
{
continueCalculating = false;
btnStartStop.Content = "Start";
}
else
{
continueCalculating = true;
btnStartStop.Content = "Stop";
this.Dispatcher.BeginInvoke(DispatcherPriority.Normal,new Action(UpdateNumber), 3);
}
}
public void UpdateNumber(int current)
{
txtNumber.Text = current.ToString();
if(continueCalculating)
{
this.Dispatcher.BeginInvoke(DispatcherPriority.SystemIdle,new Action(UpdateNumber), current + 2);
}
}
}
}