how to set value of session on .ashx file in asp.net? - asp.net

Question

I'm using "jquery.uploadify.js" in my website and this jquery uses an ashx file for uploading images into a folder. In the .ashx, i am using Session["FileNameNews"] for saving images name and i am empty my Session["FileNameNews"] at the beginning of my code. But when i uploading two or three or ... images, each time my Session["FileNameNews"] is empty. I do not want to be empty my session every time I upload a photo and i want the uploaded images to be displayed in a listbox of the parent .aspx page. Other means, i need to my session empty in start of uplaod and fill with images names in end of upload. I am able to upload multiple image at a time.
Does anyone have an idea? Please Help me.
Thank you.
.aspx page:
<script type = "text/javascript">
$(window).load(
function() {
$("#<%=FileUpload1.ClientID%>").fileUpload({
'uploader': 'scripts/uploader.swf',
'cancelImg': 'images/cancel.png',
'buttonText': 'Browse Files',
'script': 'Upload.ashx',
'folder': 'Temp',
'fileDesc': 'Image Files',
'fileExt': '*.jpg;*.jpeg;*.gif;*.png',
'multi': true,
'auto': false
});
}
);
</script>
Start Upload
|Clear
<div style = "padding:40px">
<asp:FileUpload ID="FileUpload1" runat="server" />
</div>
and Upload.ashx:
public class Upload : IHttpHandler, IRequiresSessionState {
public void ProcessRequest(HttpContext context)
{
context.Session["FileNameNews"] = "";
context.Response.ContentType = "text/plain";
context.Response.Expires = -1;
try
{
HttpPostedFile postedFile = context.Request.Files["Filedata"];
string savepath = "";
string tempPath = "";
tempPath = "Temp";//System.Configuration.ConfigurationManager.AppSettings["FolderPath"];
savepath = context.Server.MapPath(tempPath);
string filename = postedFile.FileName;
if (!Directory.Exists(savepath))
Directory.CreateDirectory(savepath);
string SitePath = context.Server.MapPath(context.Request.ApplicationPath) + #"\Temp\";
string SitePath1 = context.Server.MapPath(context.Request.ApplicationPath) + #"\WebImages\NewsImages\";
string FileN = SitePath + filename + "{---}" + context.Session["UserID"].ToString();
if ((File.Exists(SitePath + filename + "{---}" + context.Session["UserID"])) || (File.Exists(SitePath1 + filename)))
{
return;
}
else
{
postedFile.SaveAs(savepath + #"\" + filename);
postedFile.SaveAs(savepath + #"\" + filename + "{---}" + context.Session["UserID"]);
if (context.Session["FileNameNews"] == "") { context.Session["FileNameNews"] = filename; }
else { context.Session["FileNameNews"] = context.Session["FileNameNews"] + "," + filename; }
context.Response.Write(tempPath + "/" + filename);
context.Response.StatusCode = 200;
}
}
catch (Exception ex)
{
context.Response.Write("Error: " + ex.Message);
}
}
public bool IsReusable
{
get
{
return false;
}
}
}

Answer 1

If this ashx handler is the endpoint for your file upload ajax request, and you throw an exception, you will never see the error message from your try / catch. You are likely "swallowing" your exceptions. Drop the try / catch and examine the result status (or error message) using the debug tools in your browser.