Please try the following code:
<%@ 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">
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
Attachments1.ProgressPanelStyle.CssClass = "ProgressStyle";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Uploading multiple files like GMail</title>
<style type="text/css">
.ProgressStyle
{
margin:5px auto; width:400px; height:100px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<CuteWebUI:UploadAttachments InsertText="Upload Multiple files Now" runat="server"
ID="Attachments1" MultipleFilesUpload="true" >
</CuteWebUI:UploadAttachments>
</form>
</body>
</html>
Regards,
Eric