触发键盘按键事件，而无需按键盘上的键 [英] Trigger a keyboard key press event without pressing the key from keyboard

问题描述

如何在不从键盘上按下键的情况下触发按键事件?我尝试了此处中的解决方案，但是我出现以下异常:

How can I trigger a key press event without pressing the key from Keyboard? I tried with the solution from here, but I got the following exception:

与之匹配的最佳重载方法 'System.Windows.PresentationSource.FromVisual(System.Windows.Media.Visual)' 有一些无效的参数.

The best overloaded method match for 'System.Windows.PresentationSource.FromVisual(System.Windows.Media.Visual)' has some invalid arguments.

考虑 Shift + A 包含键盘上的2个按键事件，如何在不按键盘的情况下进行操作?(让我们在按钮上单击时在文本框中打印大写字母A)

Consider Shift+A contains 2 key press event from keyboard,how can I do it without keyboard pressing?(let, just print capital A in a textbox on a button click)

我的代码

var key = Key.A;                    // Key to send
var target = Keyboard.FocusedElement;    // Target element
var routedEvent = Keyboard.KeyDownEvent; // Event to send

target.RaiseEvent(new System.Windows.Input.KeyEventArgs(Keyboard.PrimaryDevice, System.Windows.PresentationSource.FromVisual(target), 0, key) { RoutedEvent = routedEvent });

推荐答案

System.Windows.Forms.SendKeys.Send()为我完成了窍门.

有关高级说明和可用代码列表，请参考

For advanced instructions and the list of available codes, consult the docs for the method.

例如，要发送 Shift + A ，我使用了SendKeys.Send("+(a)").

For example, to send Shift+A I used SendKeys.Send("+(a)").

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