如何模拟 WPF 文本框的文本输入?

问题描述

我想模拟用户对 WPF 文本框的输入.我想输入一个字符，以便触发 OnPreviewTextInput 事件.我尝试通过 Text 属性设置 Text，但这并没有触发事件:

I want to simulate user input to a WPF TextBox. I want to input a character such that the OnPreviewTextInput event is triggered. I tried setting the Text through the Text property, but this didn't trigger the event:

public void SomeFunction()
{
    var textBox = new TextBox();
    textBox.Text = "A";
}

我可以以某种方式显式触发事件吗?

Can I trigger the event explicitly somehow?

推荐答案

查看 如何在 C# 中以编程方式生成按键事件? 以很好地描述如何模拟输入事件.

See the answer to How can I programmatically generate keypress events in C#? for a good description of how to simulate input events.

你也可以这样做:

TextCompositionManager.StartComposition(
    new TextComposition(InputManager.Current, textBox, "A"));

这将引发 PreviewTextInput 事件，然后引发 TextInput 事件并更改文本.

This will raise the PreviewTextInput event and then raise the TextInput event and change the text.

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