custom validater using asp.net with java script
Customervalidator (Client side)
<head runat="server">
<title></title>
<script type="text/javascript" language="javascript">
function
IsEven(source, args)
{
if
(args.Value % 2 == 0) {
args.IsValid = true;}
else
{ args.IsValid = false;}
}
</script>
</head>
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="TextBox1"
ErrorMessage="please enter even no" ClientValidationFunction="IsEven"></asp:CustomValidator>
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="IsEven" />
<br />
<br />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
Customervalidator (Server side)
Custom text:<br
/>
<asp:TextBox
runat="server" id="txtCustom"/>
<asp:CustomValidator
runat="server" id="cusCustom"
controltovalidate="txtCustom"
onservervalidate="cusCustom_ServerValidate" errormessage="The
text must be exactly 8 characters long!" />
<br
/><br/>
protected void
CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
if
(args.Value.Length== 8)
args.IsValid = true;
else
args.IsValid = false;
}
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