C# Winforms 文本框的焦点丢失事件？
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Focus Lost event for a Winforms TextBox?
提问by Joan Venge
Which event should I use for this?
我应该为此使用哪个事件？
采纳答案by Joey
Control.Leaveor Control.LostFocus:
Control.Leave或Control.LostFocus：
When you change the focus by using the keyboard (?, ?+?, and so on), by calling the Selector SelectNextControlmethods, or by setting the ContainerControl.ActiveControlproperty to the current form, focus events occur in the following order:
When you change the focus by using the mouse or by calling the Focusmethod, focus events occur in the following order:
If the CausesValidationproperty is set to false, the Validatingand Validatedevents are suppressed.
当您使用键盘（?、?+?等）、通过调用Select或SelectNextControl方法或通过将ContainerControl.ActiveControl属性设置为当前窗体来更改焦点时，焦点事件将按以下顺序发生：
当您使用鼠标或通过调用Focus方法更改焦点时，焦点事件按以下顺序发生：
如果CausesValidation属性设置为 false，则Validating和Validated事件将被抑制。
回答by Wil P
Control.LostFocus.
控制。失去焦点。
回答by Martin Robins
'Control.LostFocus'
'Control.LostFocus'
