Problem in validation of numeric in textboxes asp.net

Question

My Question is how I'll be able to set a RegularExpressionValidator to numeric and special character like (),-.? Like (02)1234-123:

check my codes below.. its running properly.. only for numeric..

 &nbsp;<asp:TextBox ID="txtManual" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator ID="revNumericValidator" runat="server" 
ValidationExpression="^[0-9]*$" ControlToValidate="txtManual" ErrorMessage="Must be       Numeric" />

Without knowing what pattern you are trying to match, it is impossible to say what the regular expression needs to be. Are you specifically trying to match input of the form shown in your example? — Joel Lee
– Joel Lee, Commented May 2, 2011 at 5:01

Joel Lee · Accepted Answer · 2011-05-02 05:09:12Z

1

Change your validation expression to:

"^\(\d+\)\d+-\d+$"

This will match strings like (02)1234-123, but it will also match strings like (1212)1-123456, because it will match any number of digits in each group.

To limit the number of digits in each group you can use {n} where n is the number if characters to match. For example:

"^\(\d{2}\)\d{4}-\d{3}$"

Here is a link to a "cheat sheet' for regular expressions.

http://www.mikesdotnetting.com/Article/46/CSharp-Regular-Expressions-Cheat-Sheet

answered May 2, 2011 at 5:09

Joel Lee

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