>Dear the expert,
>
>How to set textbox to only accept numerical value ..?
>
>Thanks
>
>Regards
>Winan

Winan,

You can't set an textbox to only accept a numerical value. You can either:

1. Test the .text property of the textbox for a numerical value during postback and inform the user that a numerical value is required.

2. Use a third-party product that provides a textbox that only accepts numerical values.

3. Write your own textbox custom control that includes javascript to intercept keystrokes and only allow digits, commas and a decimal point.

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ASP.NET is limited by the HTML standard, as defined by the W3C (World Wide Web Consortium). The latest version, HTML 4.01, does not include a textbox with the kind of interactive control that a textbox in VFP or a Windows Forms .NET application has.