RegularExpressvalidator in ASP.NET

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Hi all visitor.
I have created one textbox in ASP.NET.
i want to let user input only 5 chracters with format("A1937" or "B9487").
Note
the first character is start from ("A or Z") and 4 characters more is only number from ("0 to 9").

Is anyone know how to format like this?

Thanks
TONY

Posted 17-Mar-12 20:35pm

soeun tony

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ProEnggSoft · Answer 1 · 2012-03-17T21:24:00

The following code can be used for the above purpose

XML

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
    ControlToValidate="TextBox1"
    ErrorMessage="The text must be in the format A####";
    ValidationExpression="[A-Z]{1}[0-9]{4}">
</asp:RegularExpressionValidator>