📄 showcode.asp@source=demo_customvalidator

📁 W3Schools tutorial..web designing

💻 ASP@SOURCE=DEMO_CUSTOMVALIDATOR

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<HTML>
<HEAD></HEAD>
<FONT FACE="Verdana, Arial, Helvetica" SIZE=2>
<FONT COLOR=#0000ff>&lt;script&nbsp; runat="server"><br />Sub user(source As object,args As ServerValidateEventArgs)<br />&nbsp;&nbsp;  if len(args.Value)&lt;8 or len(args.Value)>16 then<br />&nbsp;&nbsp;&nbsp;   args.IsValid=false<br />&nbsp;&nbsp;  else<br />&nbsp;&nbsp;&nbsp;   args.IsValid=true<br />&nbsp;&nbsp;  end if<br />End Sub<br />&lt;/script&gt;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;    <br /><br />&lt;html><br />&lt;body><br /><br />&lt;form runat="server"><br />&lt;asp:Label runat="server" Text="Enter a username: " /><br />&lt;asp:TextBox id="txt1" runat="server" /><br />&lt;asp:Button Text="Submit" runat="server"/><br />&lt;br /><br />&lt;asp:Label id="mess" runat="server"/><br />&lt;br /><br />&lt;asp:CustomValidator<br />ControlToValidate="txt1"<br />OnServerValidate="user"<br />Text="A username must be between 8 and 16 characters!"<br />runat="server"/><br />&lt;/form><br /><br />&lt;/body><br />&lt;/html><br />

</HTML>

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