I tried to upload files images using the asyncFileUpload control.

I tried it on localhost and it worked perfectly.

The problem I faced occured on production server.

The fact is that I'm not using session !!

Below are the error and the methods that I'm using.

Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.

[SerializationException: Type 'System.Web.HttpPostedFile' in Assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is not marked as serializable.]
   System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type) +7733643
   System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context) +258
   System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo() +111
   System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter) +161
   System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter) +51
   System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) +410
   System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck) +134
   System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +1577


Theese are the methods I'm using.

protected void AsyncFileUpload1_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e) {
            string email = WriteYourEmailTXT.Text;
            var dt = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day).ToString("ddMMyyyy");
            string parentFolder = Server.MapPath("uploads");
            string childFolder = parentFolder + "\\" + email + "\\";
            if (!Directory.Exists(childFolder))
                Directory.CreateDirectory(childFolder);

            string counter = getCount();
            if (AsyncFileUpload1.HasFile) {
                string ext = getExtension(AsyncFileUpload1.FileName);
                string finalName = dt + "_" + counter + ext;
                string finalPath = childFolder + finalName;
                AsyncFileUpload1.SaveAs(finalPath);
                SetCount();
                SetFileName(finalName);
            }
        }

protected void SetFileName(string fileName) {
            HttpCookie aCookie = Request.Cookies["FileName"];
            var filename = "";
            if (aCookie != null)
                if (aCookie.Value != "") {
                    filename = aCookie.Value;
                }
            string newFileName = filename + "," + fileName;
            Response.Cookies["FileName"].Value = newFileName;
        }


 protected void SetCount() {
            HttpCookie aCookie = Request.Cookies["CountPhoto"];
            int cookieNum = 0;
            if (aCookie != null)
                if (aCookie.Value != "")
                    cookieNum = int.Parse(aCookie.Value.ToString());

            string newvalue = (cookieNum + 1).ToString();
            Response.Cookies["CountPhoto"].Value = newvalue;
        }

  

 I'll apreciate any answer.
Thanks in Advance
 

Hi,

This is a known issue, the AsynchFileUpload control doesn't support the Out of Process (OOP) session mode.This means that you can use it only when the session mode is "InProc" (the default).

This is because the Control use the session to store the uploaded file,

Please see this thread for more details:

http://forums.asp.net/p/1478889/3490074.aspx#3490074

I follow the link you sent me but unfortunatly I didn't understand how can i solve my problem.

Might I change something in web.config file?

You must make sure that the sessionState section in the web.cofig file is set to "InProc":

<sessionState mode="InProc"></sessionState>

If it's set correctly and you still get that error, then contact your hosting support and ask them to set your website as a virual directory in IIS.

Thank you very much anas.