C# 处理功能按键
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handling function key press
提问by Tj.
I have a C# form with 5 buttons. The users enters the information and depending on the press of a function key, a specific action is performed. F9-Execute Order, F6-Save, F3-LookUp.
我有一个带有 5 个按钮的 C# 表单。用户输入信息，并根据功能键的按下，执行特定操作。F9-执行订单，F6-F3保存，-查找。
I have added the foolowing code:
我添加了愚蠢的代码：
OnForm_Load
OnForm_Load
this.KeyUp += new System.Windows.Forms.KeyEventHandler(KeyEvent);
and
和
private void KeyEvent(object sender, KeyEventArgs e) //Keyup Event
{
if (e.KeyCode == Keys.F9)
{
MessageBox.Show("Function F9");
}
if (e.KeyCode == Keys.F6)
{
MessageBox.Show("Function F6");
}
else
MessageBox.Show("No Function");
}
but nothing happens
但什么也没发生
Thanks
谢谢
采纳答案by yu_sha
You need to set
你需要设置
KeyPreview=True
for your form. Otherwise key press is swallowed by the control that has focus.
为您的表格。否则按键被具有焦点的控件吞下。
