Hi
At first blush this seemed like it should be so simple. Guess again.
I want to only allow numeric characters and hexadecimal values in a TextBox,
anything else should be ignored, and maybe a beep be issued.
So I figure I need a KeyDown event and I just have to mark it as Handled,
right?
Wrong!!!!
So how do I accomplish this? I have all my controls in a UserControl BTW.
As a side note, you'd think Microsoft would have added a NumericOnly
property to their text fields by now.
How many times have I had to do numeric only validation, I've lost count. 4 3624
Hi,
"Tim Osborne" <Ti*********@xc ellenet.com> wrote in message
news:Og******** ******@tk2msftn gp13.phx.gbl... Hi
At first blush this seemed like it should be so simple. Guess again.
I want to only allow numeric characters and hexadecimal values in a TextBox, anything else should be ignored, and maybe a beep be issued.
So I figure I need a KeyDown event and I just have to mark it as Handled, right?
Wrong!!!!
I could bet I have done it this way, why it's not working with you? In what
platform are you in?
So how do I accomplish this? I have all my controls in a UserControl BTW.
As a side note, you'd think Microsoft would have added a NumericOnly property to their text fields by now. How many times have I had to do numeric only validation, I've lost count.
You are right in this one, not only that but it's enough to make public a
protected property
public class NumberTextBox : TextBox
{
protected override CreateParams CreateParams
{
get
{
CreateParams cp = base.CreatePara ms;
cp.Style |= 0x2000; // ES_NUMBER
return cp;
}
}
}
cheers,
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
Perhaps you shoud try manipulate with MaskedTextBox
PK
Ahhhhhh, well the first part of the solution is to do the checking in the
KeyPressed handler.
That way when you say e.Handled = true; it doesn't pass the event onwards.
Now I just have to figure out how to make a Beep sound.
Any ideas on that one?
"Tim Osborne" <Ti*********@xc ellenet.com> wrote in message
news:Og******** ******@tk2msftn gp13.phx.gbl... Hi
At first blush this seemed like it should be so simple. Guess again.
I want to only allow numeric characters and hexadecimal values in a TextBox, anything else should be ignored, and maybe a beep be issued.
So I figure I need a KeyDown event and I just have to mark it as Handled, right?
Wrong!!!!
So how do I accomplish this? I have all my controls in a UserControl BTW.
As a side note, you'd think Microsoft would have added a NumericOnly property to their text fields by now. How many times have I had to do numeric only validation, I've lost count.
> Now I just have to figure out how to make a Beep sound.
using System.Runtime. InteropServices ;
[DllImport("kern el32.dll")]
private static extern bool Beep(int freq, int dur);
Beep(3000, 200); This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: Peter |
last post by:
Hello:
How can I validate the character encoding of the textbox in a form?
For instance, when the user fills out a form, I need to be sure that he is
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Do you know any JS code sample that I could use?
I would appreciate your help.
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by: anonieko |
last post by:
This applies to javascript dynamic textbox onkey
>
>
>
Newsgroups: comp.lang.javascript
From: Lasse Reichstein Nielsen <l...@hotpop.com> - Find messages by
this author
Date: Fri, 15 Jul 2005 18:39:24 +0200
Local: Fri,Jul 15 2005 12:39 pm
Subject: Re: Summer 2005 browsers' test set ?
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ASCII character 04 with the string "<EOT>". I have tried doing a simple...
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