Getting keypress Enter

[Chan]

How do I capture when the user presses the enter key in a certain text box?

[Jordan]

Capture the "keypress" event of your control and add this code:

if (e.KeyChar == (char)13)
{
    // Code
    ......................
}

[brackett]

Jordan's got it right. Though I'd recommend using the System.Windows.Forms.Keys enum instead of 13. Just a style guidance, though - functionally, it should be the same.

[Jordan]

Actually, that is the way I prefer it too brackett but I couldn't get it to work in C#. I looked through all of the properties of e in the above code and nothing would would convert. So, for instance

if (e.keychar == system.windows.forms.keys.enter) {}

will not compile.

in managed C++ 2.0 I know there is a keycode property of KeyEventArgs so code would look like this:

if (e->KeyCode == System::Windows::Forms::Keys::Enter)

Not sure if this is a bug or what.....

[brackett]

Quick browse of MSDN2 shows that KeyDown and KeyUp use KeyEventArgs, which includes the KeyCode property. KeyPress uses KeyPressEventArgs, which does not have a KeyCode property (only KeyChar).

Unfortunately, it also states that without overriding the IsInputKey method of the control, Enter will be handled by the control directly and not raise the KeyDown/KeyUp events. I'm unclear on whether KeyPress is raised or not.

Yeah - I think there's a design mistake in there somewhere. You'd think KeyPressEventArgs would inherit from KeyEventArgs (adding the Handled flag). But, as it stands, I guess casting to char is the easiest way to do it.

I'd suspect System.Windows.Forms.Keys.Enter is 13, so you could cast that to char. At least it'd give some contextual information on what you're trapping.