WPF中button按钮同时点击多次触发click解决方法

 DateTime lastClick = DateTime.Now;
 object obj = new object();
 int i = 0;
 private void Button_Click(object sender, RoutedEventArgs e)
 {
 this.IsEnabled = false; 
 var t = (DateTime.Now - lastClick).TotalMilliseconds;
 i++;
 lastClick = DateTime.Now;
 System.Diagnostics.Debug.Print(t + "," + i + ";" + DateTime.Now);
 Thread.Sleep(2000); 
 this.IsEnabled = true;
 }

private void Button_Click(object sender, RoutedEventArgs e)
 {
 this.IsEnabled = false;
 DispatcherHelper.DoEvents();
 var t = (DateTime.Now - lastClick).TotalMilliseconds;
 i++;
 lastClick = DateTime.Now;
 System.Diagnostics.Debug.Print(t + "," + i + ";" + DateTime.Now);
 Thread.Sleep(2000); 
 this.IsEnabled = true;
 }
 public static class DispatcherHelper
 {
 [SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
 public static void DoEvents()
 {
 DispatcherFrame frame = new DispatcherFrame();
 Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background, new DispatcherOperationCallback(ExitFrames), frame);
 try { Dispatcher.PushFrame(frame); }
 catch (InvalidOperationException) { }
 }
 private static object ExitFrames(object frame)
 {
 ((DispatcherFrame)frame).Continue = false;
 return null;
 }
 }