WPF中button按钮同时点击多次触发click怎么解决

解决WPF中button按钮同时点击多次触发click的方法，供大家参考，具体内容如下

DateTime lastClick = DateTime.Now;

objectobj =newobject();

inti = 0;

privatevoidButton_Click(objectsender, 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;

}

以上代码并没法解决用户点击两次按钮触发两次的问题,因为ui线程是单线程的,所以这个这样会导致用户连续点击两次,会两秒后又调用Button_Click一次,输出如下:

1207.069,1;2017年4月19日 13:58:22
2055.1176,2;2017年4月19日 13:58:24

所以要在this.IsEnabled = false;后面强制界面刷新,代码如下:

privatevoidButton_Click(objectsender, 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;

  }

  publicstaticclassDispatcherHelper

  {

   [SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]

   publicstaticvoidDoEvents()

   {

    DispatcherFrame frame =newDispatcherFrame();

    Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background,newDispatcherOperationCallback(ExitFrames), frame);

    try{ Dispatcher.PushFrame(frame); }

    catch(InvalidOperationException) { }

   }

   privatestaticobjectExitFrames(objectframe)

   {

    ((DispatcherFrame)frame).Continue =false;

    returnnull;

   }

  }

DispatcherHelper.DoEvents();这个方法会强制界面刷新，问题就解决了。