聚焦丢失事件一个WinForms文本框？ [英] Focus Lost event for a Winforms TextBox?

问题描述

哪个事件我应该使用这个？

Which event should I use for this?

推荐答案

<一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.leave.aspx">Control.Leave或<一href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.lostfocus.aspx">Control.LostFocus:

当您使用键盘更改焦点（⇆，<大骨节病>⇧ + <大骨节病>⇆，等等），通过调用<一HREF =htt​​p://msdn.microsoft.com/en-us/library/system.windows.forms.control.select.aspx>选择或<一href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.selectnextcontrol.aspx">SelectNextControl方法，或通过设置<一href="http://msdn.microsoft.com/en-us/library/system.windows.forms.containercontrol.activecontrol.aspx">ContainerControl.ActiveControl属性设置为当前的形式，出现下列顺序焦点事件：

When you change the focus by using the keyboard (⇆, ⇧+⇆, and so on), by calling the Select or SelectNextControl methods, or by setting the ContainerControl.ActiveControl property to the current form, focus events occur in the following order:

  
1. 进入
  
2. <一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.gotfocus.aspx">GotFocus
  
3. 离开
  
4. <一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.validating.aspx">Validating
  
5. <一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.validated.aspx">Validated
  
6. 引发LostFocus
  

1. Enter
2. GotFocus
3. Leave
4. Validating
5. Validated
6. LostFocus

当您使用鼠标或通过调用更改焦点重点方法，会出现下列顺序焦点事件：

When you change the focus by using the mouse or by calling the Focus method, focus events occur in the following order:

  
1. 进入
  
2. <一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.gotfocus.aspx">GotFocus
  
3. <一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.lostfocus.aspx">LostFocus
  
4. 离开
  
5. <一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.validating.aspx">Validating
  
6. <一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.validated.aspx">Validated
  

1. Enter
2. GotFocus
3. LostFocus
4. Leave
5. Validating
6. Validated

如果在<一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.causesvalidation.aspx">CausesValidation属性设置为false，<一个href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.validating.aspx">Validating和<一href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.validated.aspx">Validated事件燮pressed。

If the CausesValidation property is set to false, the Validating and Validated events are suppressed.

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