LostFocus事件的问题

本文介绍了LostFocus事件的问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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

shujaatsiddiqi.blogspot