Dear sanjshah,
Please make sure you have setted MultipleFilesUpload to true:
<form id="form1" method="POST">
<%
Dim uploader
Set uploader=new AspUploader
uploader.MaxSizeKB=10240
uploader.Name="myuploader"
uploader.InsertText="Upload File (Max 10M)"
uploader.MultipleFilesUpload=true
%>
<%=uploader.GetString() %>
</form>
To use the multiple files upload, silverlight or flash need to be installed in client computer.
1. If ASP Uploader detects SilverLight is installed on your PC, It will use the SilverLight solution.
2. If ASP Uploader detects Flash is installed on your PC, It will use the Flash solution.
3. If ASP Uploader detects Iframe is supported on your Browser, It will use the Iframe solution.
4. ASP Uploader will render as default standard upload control.
Thank you for asking