在C＃中，如何将刷新/重绘消息发送到WPF网格或画布？ [英] In C#, how do you send a refresh/repaint message to a WPF grid or canvas?

问题描述

换句话说，我在调试模式下注意到了，我可以编写发送给WPF网格或画布的代码一行显示，然后，如果该行不正确，我可以调整它 - 但上一行仍然存在。
现在，我正在编写的代码会根据用户点击的内容向显示器发送信息。所以这必定意味着每当一组新的线条和框和文本进入WPF的网格或画布时，显示不会被刷新。

使用C＃代码，如何使用C＃代码你发送一个刷新/ repaint消息到WPF网格或画布？

解决方案

刷新更新像Winforms一样的WPF控件

  public static class ExtensionMethods 
 {
 private static Action EmptyDelegate = delegate（）{}; 
 
 public static void Refresh（this UIElement uiElement）
 {
 uiElement.Dispatcher.Invoke（DispatcherPriority.Render，EmptyDelegate）; 
} 
} 
  

How do you send a refresh message to a WPF grid or canvas?

In other words, I have noticed while in debug mode, I can write code that sends a line to the display and then, if that line is not right, I can adjust it -- but the previous line is still there. Now, the code I am writing sends information to the display based on what the user clicks. So this must mean that the display is not refreshed each time a new set of lines and boxes and text goes to the grid or canvas in WPF.

Using C# code, how do you send a refresh/repaint message to a WPF grid or canvas?

解决方案

Refresh update WPF Controls like Winforms

public static class ExtensionMethods
{
   private static Action EmptyDelegate = delegate() { };

   public static void Refresh(this UIElement uiElement)
   {
      uiElement.Dispatcher.Invoke(DispatcherPriority.Render, EmptyDelegate);
   }
}

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