The following page works fine on FireFox (the custom validator checks
to make sure that there's a value in the file upload text box).
However, on IE 7, when there's a value in the text box, the page
doesn't post-back when clicking submit. Can anyone reproduce or offer
some advice?
ASPX file
<%@ Page Language="C#" AutoEventWireup ="true"
CodeFile="Defau lt.aspx.cs" Inherits="_Defa ult" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Untitl ed Page</title>
<script type="text/javascript">
function ValidateFileUpl oad(sender, args)
{
if (args.Value.len gth 0)
{
args.IsValid = true;
}
else
{
args.IsValid = false;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:FileUplo ad ID="fu" runat="server" />
<asp:CustomVali dator ID="CustomValid ator1" runat="server"
ClientValidatio nFunction="Vali dateFileUpload"
ControlToValida te="fu" ErrorMessage="C ustomValidator"
ValidateEmptyTe xt="True"
OnServerValidat e="CustomValida tor1_ServerVali date">*</
asp:CustomValid ator><br />
<asp:Button ID="btnOK" runat="server" Text="Submit"
OnClick="btnOK_ Click" />
</div>
</form>
</body>
</html>
CODE BEHIND file
using System;
using System.Data;
using System.Configur ation;
using System.Web;
using System.Web.Secu rity;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.W ebControls.WebP arts;
using System.Web.UI.H tmlControls;
public partial class _Default : System.Web.UI.P age
{
protected void Page_Load(objec t sender, EventArgs e)
{
}
protected void btnOK_Click(obj ect sender, EventArgs e)
{
}
protected void CustomValidator 1_ServerValidat e(object source,
ServerValidateE ventArgs args)
{
if (args.Value.Len gth 0)
{
args.IsValid = true;
}
else
{
args.IsValid = false;
}
}
}
