CompareValidator performs a comparison against a fixed value. : CompareValidator « Validation « ASP.NET Tutorial
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- CompareValidator
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void Page_Load()
{
cmpDate.ValueToCompare = DateTime.Now.ToString("d");
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show Fixed Value</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label
id="lblDate"
Text="Date:"
AssociatedControlID="txtDate"
Runat="server" />
<asp:TextBox
id="txtDate"
Runat="server" />
<asp:CompareValidator
id="cmpDate"
Text="(Date must be greater than now)"
ControlToValidate="txtDate"
Type="Date"
Operator="GreaterThan"
Runat="server" />
<br /><br />
<asp:Button
id="btnSubmit"
Text="Submit"
Runat="server" />
</div>
</form>
</body>
</html>