How to determine if Pressed key is Underscore Or Minus? C#

问题

The problem is that for both underscore and minus the keyvalue is 189, and the keycode is Keys.OemMinus. So I am unable to check whether pressed key is underscore or minus. Please Help.

private void Some_KeyDown(object sender, KeyEventArgs e)
{
       if(Pressed key is minus/dash)
       {
           MessageBox.Show("minus");
       }

       if(pressed key is underscore)
       {
          MessageBox.Show("underscore");
       }
}

回答1:

If this is a WinForms project, use the KeyPress event instead of the KeyDown event:

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    if(e.KeyChar == '-')
    {
        MessageBox.Show("Minus");
    }
    if (e.KeyChar == '_')
    {
        MessageBox.Show("Underscore");
    }
}

来源：https://stackoverflow.com/questions/37087435/how-to-determine-if-pressed-key-is-underscore-or-minus-c-sharp