How to search a textbox for numbers, and if numbers not found give error messege

[srig]

hi every one..
i need to get id as input..wen d user gives input other than numbers like alphabets or special characters then it should display error message..isnume ric wil work in vb.net.. but i m workin in visual studio 2005.. can any one help me in this

regards
sri

[kenobewan]

Have you tried using regular expressions?

[Frinavale]

Regular expressions are very powerful and can easily check if a String contains a number. You should really look into using them. They can be used in your server side .NET code and can also be used by client side scripting languages like JavaScript.

There is a RegularExpressi onValidator control that can check your TextBox value before the page is submitted to the server (it uses JavaScript to do this validation). It is strongly advisable to also check this on the server because there are ways around the client side validation.

Check out this article on how to check if a TextBox contains a number. At this time, this article does not cover how to use regular expressions or the RegularExpressi onValidator but in the future it may be updated to include this topic.

Cheers,

-Frinny

[amirghaffarie1362]

this BOLD javascript code lock keyword , so users just could inter Number in text box

<asp:TextBox onkeypress=" if((event.keyCo de>57) || (event.keyCode< 48)) {event.returnVa lue=false}" id="TextBoxAmou nt" runat="server" ></asp:TextBox>

[srig]

thanks frinny:)
i got it..it helped me a lot and learnt new things..
thank u very much:)

Regards
Sri