Validation By Function ASP.Net

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<%@ Page Language=VB Debug=true %>


Using a RegularExpressionValidator Control to Test a Zip Code





Please enter a 5-digit Zip Code:

    id="txtZipCode" 
    runat=server 
/>
    id="regZipCode"
    controltovalidate="txtZipCode"
    validationexpression="^\d{5}$"
    display="Dynamic"
    font-name="Arial" 
    font-size="11"
    runat=server
>
    Zip code must be a number in the form of 12345.




    id="butOK"
    text="OK"
    type="Submit"
    runat="server"
/>