Mega Code Archive
Using two RequiredFieldValidator controls for one form element
<![CDATA[
<%@ Page Language="VB" %>
<script runat="server">
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Label1.Text = "Page is valid!"
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>RequiredFieldValidator</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" Runat="server">My Initial Value</asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1"
Runat="server"
ErrorMessage="Please change value"
ControlToValidate="TextBox1"
InitialValue="My Initial Value"/>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2"
Runat="server"
ErrorMessage="Do not leave empty"
ControlToValidate="TextBox1">
</asp:RequiredFieldValidator>
<br />
<asp:Button ID="Button1" Runat="server" Text="Submit"
OnClick="Button1_Click" />
<br />
<asp:Label ID="Label1" Runat="server"></asp:Label>
</div>
</form>
</body>
</html>
]]>