<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="WPF" Height="100" Width="300">
<StackPanel>
<Button x:Name="button" Click="Button_Click">Start Timer</Button>
<TextBlock x:Name="txtStatus">
</TextBlock>
</StackPanel>
</Window>
//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Threading;
namespace WpfApplication1
{
public partial class Window1 : Window
{
private DispatcherTimer timer;
public Window1()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
if(timer == null || !timer.IsEnabled)
{
timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromMilliseconds(1000);
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
button.Content = "Stop Timer";
}
else
{
timer.Stop();
button.Content = "Start Timer";
}
}
private void timer_Tick(object sender, EventArgs e)
{
txtStatus.Text = DateTime.Now.Second.ToString();
}
}
}
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