Keypress in a textbox.

[Todd Sparks]

I am using Visual Studio 2003 to develop a windows application in which I
allow the users to just press Enter, while the focus is on a textbox, in
order to perform a search. My problem is that sometimes Keypress event
stops being raised. I have found that I can reproduce this behavior by
performing a search, opening up another form, then trying to perform another
search. The second search will NEVER work.

How can I fix this problem?

Thanks,
Todd Sparks

[Todd Sparks]

No, none of my forms have default buttons. But I do think it has something
to do with this. Somehow I think my original form is remembering that the
last thing I did was press a button so whenever I am pressing the Enter key
it is trying to duplicate that action. So, I guess the real question then
is how can I prevent this from happening?

"Brian Schwartz" <br***@fishnetc omponentswos.co m> wrote in message
news:%2******** *******@TK2MSFT NGP12.phx.gbl.. .

Does the second form you're bringing up have a button that is the form's
default? That might be stealing your keypress event so it's never raised.

Brian

--
Brian Schwartz
FishNet Components
http://www.fishnetcomponents.com
Building better tools for developers--be part of it!

[Peter Huang [MSFT]]

Hi

You may take a look at the link below.

Trapping Enter key in Windows Forms TextBox
http://www.heikniemi.net/hc/archives/000122.html

We can inhertis a Textbox and then handle its KeyDown event
public class MyTextbox : System.Windows. Forms.TextBox
{
protected override bool IsInputKey(Keys key)
{
if (key == Keys.Enter)
return true;
return base.IsInputKey (key);
}
}

private void txtTest_KeyDown (object sender,
System.Windows. Forms.KeyEventA rgs e)
{
if (e.KeyCode == Keys.Enter)
{
e.Handled = true;
this.lblValue.T ext=this.txtTes t.Text.Trim();
}
}
Best regards,

Peter Huang
Microsoft Online Partner Support

Get Secure! - www.microsoft.com/security
This posting is provided "AS IS" with no warranties, and confers no rights.

[Brian Schwartz]

> Right now it seems to have something to do with the fact that when I

return to my 'main' form and change my search criteria and press the Enter
key it is trying to do the button-click that opened up the second form
instead of my search.

I'm not sure I'm following you, but if it's somehow "rememberin g" a keypress
later, what if you set the Handled property in the event to True?

--
Brian Schwartz
FishNet Components
http://www.fishnetcomponents.com
Building better tools for developers - Be part of it!