How many files does FileUploader accept when multi-select is enabled?

Question

I am getting the following error:

A first chance exception of type 'System.Web.HttpException' occurred in System.Web.dll

Additional information: Maximum request length exceeded.

when I try to upload 250 jpegs which are 98.kb in size so roughly a total of 31 mb. Now I know that fileuploader doesn't allow a file over 4mb by default does this mean that each single file must be less than 4mb or that each single upload attempt total size must be less than 4mb?

I googled around for a solution and tried the following in my web config

<security>
  <requestFiltering>
    <requestLimits maxAllowedContentLength="524288000" />
  </requestFiltering>
</security>

but I still got the same error !??

here is my code:

public partial class ReUpload : System.Web.UI.Page
{
    HttpFileCollection uploads = HttpContext.Current.Request.Files;

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Session.Remove("paths");
            ListBox1.Items.Clear();
            Session.Add("paths",uploads);

        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {


        if (FileUpload1.HasFile)
        {

            try
            {
                // Get the HttpFileCollection
                HttpFileCollection hfc = Request.Files;
                for (int i = 0; i < hfc.Count; i++)
                {
                    HttpPostedFile hpf = hfc[i];
                    if (hpf.ContentLength > 0)
                    {
                        string fn = System.IO.Path.GetFileName(hpf.FileName);
                        string SaveLocation = Server.MapPath("Uploaded") + "\\" + fn;
                        ListBox1.Items.Add(fn + " succsessfully uploaded");
                        hpf.SaveAs(SaveLocation);
                    }
                }


            }
            catch (Exception ex)
            {
                // Handle your exception here
                Response.Write("Error: " + ex.Message);
            }

        }  
                    else if(ListBox1.Items.Count != 0)
             {
                 ListBox1.Items.Clear();
                 HttpFileCollection hfc = (HttpFileCollection)Session["paths"];

                for (int i = 0; i < hfc.Count; i++)
                {
                    HttpPostedFile hpf = hfc[i];
                    if (hpf.ContentLength > 0)
                    {
                        string fn = System.IO.Path.GetFileName(hpf.FileName);
                        string SaveLocation = Server.MapPath("Uploaded") + "\\" + fn;
                        ListBox1.Items.Add(fn + " succsessfully uploaded");
                        hpf.SaveAs(SaveLocation);
                    }
                 }

             }
                    else
             {

                 Response.Write("Please select a file to upload.");
             }


    }

    protected void Button2_Click(object sender, EventArgs e)
    {
        ListBox1.Items.Clear();

        if (FileUpload1.HasFile)
        {
            try
            {

                // Get the HttpFileCollection
                HttpFileCollection hfc = Request.Files;

                Session["paths"] = hfc;
                for (int i = 0; i < hfc.Count; i++)
                {
                    HttpPostedFile hpf = hfc[i];
                    if (hpf.ContentLength > 0)
                    {
                        ListBox1.Items.Add(hpf.FileName);
                    }
                }
                //ViewState["count"] = ListBox1.Items.Count;
            }
            catch (Exception ex)
            {
                // Handle your exception here
                Response.Write("Error: " + ex.Message);
            }

        }
        else
        {

            Response.Write("Please select a file to upload.");
        }
    }

 }

}

Answer 1

This setting goes in your web.config file. It affects the entire application, though... I don't think you can set it per page.File uploader at time accept only one file. For asynchronous file upload use Ajax control

<configuration>
  <system.web>
    <httpRuntime maxRequestLength="xxx" />
  </system.web>
</configuration>

"xxx" is in KB. The default is 4096 (= 4 MB).