如何在 WPF 中制作提交按钮？
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How to make a submit button in WPF?
提问by Jader Dias
When you press Enteranywhere in a HTML formit triggers its action, that is equivalent of pressing the submitbutton.
How to make a window that when I press Enteranywhere it will trigger an event?
当您按下EnterHTML 中的任意位置时，form它会触发它的action，这相当于按下submit按钮。如何制作一个窗口，当我按下 Enter任何地方时它会触发一个事件？
回答by Alex B
回答by ihatemash
Assign the PreviewKeyDownevent to the window in XAML then check the KeyEventArgsin codebehind to determine if the user pressed the Enterkey.
将PreviewKeyDown事件分配给 XAML 中的窗口，然后检查代码KeyEventArgs隐藏以确定用户是否按下了Enter键。
XAML code:
XAML 代码：
<Window
[...]
PreviewKeyDown="Window_PreviewKeyDown">
Code behind:
后面的代码：
private void Window_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Enter)
{
// Whatever code you want if enter key is pressed goes here
}
}
回答by Walter Stabosz
I found that the DatePickercontrol will swallow the Enterkeypress so the default button doesn't get clicked. I wrote this event handler to fix that. Use the PreviewKeyUpto ensure that the DatePickerperforms its date formatting code before clicking the default button.
我发现DatePicker控件会吞下Enter按键，因此不会点击默认按钮。我写了这个事件处理程序来解决这个问题。使用PreviewKeyUp确保DatePicker在单击默认按钮之前执行其日期格式化代码。
private void DatePicker_PreviewKeyUp(object sender, KeyEventArgs e) {
// event handler to click the default button when you hit enter on DatePicker
if (e.Key == Key.Enter) {
// https://www.codeproject.com/Tips/739358/WPF-Programmatically-click-the-default-button
System.Windows.Input.AccessKeyManager.ProcessKey(null, "\x000D", false);
}
}
