<script
runat="server">
Sub user(source As object,args As
ServerValidateEventArgs)
if len(args.Value)<8 or
len(args.Value)>16 then
args.IsValid=false
else
args.IsValid=true
end if
End Sub
</script>
<html>
<body>
<form
runat="server">
<asp:Label runat="server" Text="Enter a
username: " />
<asp:TextBox id="txt1" runat="server" />
<asp:Button
Text="Submit" runat="server"/>
<br />
<asp:Label
id="mess" runat="server"/>
<br />
<asp:CustomValidator
ControlToValidate="txt1"
OnServerValidate="user"
Text="A
username must be between 8 and 16 characters!"
runat="server"/>
</form>
</body>
</html>
Output Result:
Enter a username:
A username must be between 8 and 16
characters!
--Vamsi Effective Blogs "Make everything as simple as possible but not simpler"--
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