LostFocus事件的问题 [英] Problems with LostFocus event

问题描述

在Winforms中，我能够验证文本框，如果无效，则可以通过类似的方式将焦点放回到控件上

In Winforms I was able to validate a textbox and if invalid put the focus back to the control by something like

  private void textBox1_LostFocus(object sender, RoutedEventArgs e)
  {
   if (textBox1.Text == "")
   {
    textBox1.Focus();
    textBox1.SelectAll();
   }
  }

推荐答案

FryingSaucer，

Hi FryingSaucer,

您实际上在做同样的事情. textBox1.Dispatcher.BeginInvoke仅用于对UI线程的跨线程调用.

You are practically doing the same thing. textBox1.Dispatcher.BeginInvoke is just for cross threading call to UI thread.

谢谢

穆罕默德

shujaatsiddiqi.blogspot.com

shujaatsiddiqi.blogspot.com

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