Hi
try this example to Validate FileUpload Extension using Javascript
<html xmlns=”http://www.w3.org/1999/xhtml” >
<head id=”Head1″ runat=”server”>
<title>Untitled Page</title>
<script type =”text/javascript”>
var validFiles=["bmp","gif","png","jpg","jpeg"];
function OnUpload()
{
var obj = document.getElementById(“<%=FileUpload1.ClientID%>”);
var source=obj.value;
var ext=source.substring(source.lastIndexOf(“.”)+1,source.length).toLowerCase();
for (var i=0; i<validFiles.length; i++)
{
if (validFiles[i]==ext)
break;
}
if (i>=validFiles.length)
{
alert(“This not a valid file upload file with an extention of one of the following:\n\n”+validFiles.join(“, “));
return false;
}
return true;
}
</script>
</head>
<body>
<form id=”form1″ runat=”server”>
<div>
<asp:FileUpload ID=”FileUpload1″ runat=”server” />
<asp:Button ID=”Button1″ runat=”server” Text=”Button” OnClientClick =”return OnUpload();” />
</div>
</form>
</body>
</html>
Hope this helps
Refrence her
Good Luck
Hi Yasser,
I have no objection if you use my code but give reference to the article.
Thanks
Comment by Mudassar Khan — June 3, 2009 @ 6:47 pm
Thanks
Mudassar
Comment by Mudassar Khan — June 4, 2009 @ 3:30 am
You can delete these comments
I am writing here since I cannot see About page to contact you
Thanks
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Comment by RRaveen — July 2, 2009 @ 2:39 pm