"KeyPress" WinForms文本框的事件是否丢失? [英] "KeyPress" event for WinForms textbox is missing?

问题描述

我正在尝试在文本框(WinForm)中添加"KeyPress"事件

I am trying to add an "KeyPress" event in a textbox (WinForm)

this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(CheckKeys);

这是在"CheckKeys"里面:

and here's inside the 'CheckKeys':

private void CheckKeys(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
    if (e.KeyChar == (char)13)
    {
        // Enter is pressed - do something

    }
}

这里的想法是，一旦焦点对准文本框并按下"Enter"按钮，就会发生某些事情……

The idea here is that once a textbox is in focus and the 'Enter' button was pressed, something will happen...

但是，我的机器找不到'KeyPress'事件. 我的代码有问题吗?

However, my machine cannot find the 'KeyPress' event. Is there something wrong with my codes?

更新:

我还尝试将KeyDown代替KeyPress:

I also tried putting KeyDown instead of KeyPress:

private void textBox1_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{

    if (e.Key == Key.Return)

        // Enter is pressed - do something
    }
}

虽然仍然无法正常工作...

Still not working though...

推荐答案

您正在混合类库，请不要在WPF项目中使用Windows Forms类.使它看起来像这样:

You are mixing class libraries, don't use Windows Forms classes in a WPF project. Make it look like this:

  public partial class Window1 : Window {
    public Window1() {
      InitializeComponent();
      this.textBox1.KeyDown += new KeyEventHandler(textBox1_KeyDown);
    }

    private void textBox1_KeyDown(object sender, KeyEventArgs e) {
      if (e.Key == Key.Enter) {
        MessageBox.Show("Enter!");
        e.Handled = true;
      }
    }
  }

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