<div>
check <a href="http://emoreau.com/Entries/Articles/2003/03/Creating-your-own-Windows-Custom-Control.aspx" rel="ugc">http://emoreau.com/Entries/Articles/2003/03/Creating-your-own-Windows-Custom-Control.aspx</a>
</div>


<div>
I shud maybe mention, this is a WPF application.
</div>


<div>
hi,<br />
<br />
check this <a href="http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/a88c7b22-8601-4255-a90e-3d09037aab7e/" rel="ugc nofollow">http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/a88c7b22-8601-4255-a90e-3d09037aab7e/</a>
</div>


<div>
One solution would be to capture the onKeyUp event. When a user enters a character in the textbox you can use this event to ensure he has only entered a valid character (in this case numeric only)
</div>


<div>
Hi.<br />
<br />
1. On the KeyPress event, set e.handle to true if the character is not a digit, dot (.) or backspace.<br />
<br />
2. on validate event you have several options:<br />
&nbsp; &nbsp; a. perform a Double.TryParse on the textbox's content and set e.cancel to true if it fails.<br />
&nbsp; &nbsp; you can check for range validity as well.<br />
&nbsp; &nbsp;b. Use regular expression to check it.<br />
<br />
Good luck.
</div>


<div>
<div class="content wysiwyg-content">
Hi guys,<br />
<br />
I would like to check that a textbox contains no characters and can only be (for example)...<br />
<br />
1<br />
1.00<br />
100,000.00<br />
etc<br />
<br />
Thanks,<br />
Dean.
</div>
</div>


Hi guys,

I would like to check that a textbox contains no characters and can only be (for example)...

1
1.00
100,000.00
etc

Thanks,
Dean.

Textbox check

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,

Visual Basic.NET

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.