I am trying to develop a module that will allow a user to upload files to a folder on my server.  I am developing in Visual Web Dev 2010 Epxress, .Net 3.5 Framework.  I used the module project template developed by Chris Hammond to start this project.  For my file upload box(es) in the View.ascx page I am following an example put out by Joe Stagner of Microsoft that demonstrates how to use basic HTML input elements of type "file"  and a small bit of javascript to allow the user to dynamically add additional file upload boxes before submitting the upload(s).  I know there are the ASP FileUpload and AJAX AsyncFileUpload components, but I trying to LEARN this simple way first.

The problem I'm having is with the code behind for the click event of the Upload button.  Following Joe's example, I am using an HttpFileCollection type variable "uploads" to iterate through the file upload boxes to get the filenames to upload.  The problem is that I cannot get System.Web.HttpContext.Current.Request.Files to properly reflect the files added for uploading whenever I am trying to use the code shown below in my DNN Module Development.  However, all of the code below works fine in a basic Website project created in Web Dev 2010 Express.

How do I access the HttpContext.Current.Request.Files in DNN module development??  Here's the code, first the code behind, then the HTML and Java

Thank you


protected void btnUpload_Click(object sender, EventArgs e)
       {
             HttpFileCollection uploads = System.Web.HttpContext.Current.Request.Files;
            
            for (int i = 0; i < (uploads.Count); i++)
            {
                if (uploads[i].ContentLength > 0)
                {
                    String c = System.IO.Path.GetFileName(uploads[i].FileName);
                    try
                    {
                        FileField.PostedFile.SaveAs(Server.MapPath("~/" + "UserUploads/") + c);
                        Span1.InnerHtml = "File(s) Uploaded Successfully.";
                     }
                    catch (Exception exc)
                    {
                        Span1.InnerHtml = "ERROR: " + exc.Message.ToString();
                    }

                }
            }

        }


HTML and JAVASCRIPT

<div style="text-align: center;">
    <div style="background-color:Teal; width:550px;">
        <br />
        <asp:Label ID="lblFileUpload" runat="server" Text="Add Files To Be Uploaded:" Font-Bold="true" ></asp:Label><br />
        <br /><br />
        <p id="upload-area">
        <input id="FileField" type="File" runat="server" size="60" />
        </p>
        <input id="ButtonAdd" type="button" value="Add File" onclick="addFileUploadBox()" />
       <p> 
       <asp:Button ID="btnUpload" runat="server" Text= "Upload Now" OnClick="btnUpload_Click" />
       </p>
       
       <span id="Span1" style="color:Red" runat="server"></span><br /><br />


       <script type="text/javascript">
           function addFileUploadBox() {
               if (!document.getElementById || !document.createElement)
                   return false;


               var uploadArea = document.getElementById("upload-area");
               if (!uploadArea)
                   return;


               var newLine = document.createElement("br");
               uploadArea.appendChild(newLine);


               var newUploadBox = document.createElement("input");
               newUploadBox.type = "file";
               newUploadBox.size = "60";
               if (!addFileUploadBox.lastAssignedId)
                   addFileUploadBox.lastAssignedId = 100;


               newUploadBox.setAttribute("id", "FileField" + addFileUploadBox.lastAssignedId);
               newUploadBox.setAttribute("name", "FileField" + addFileUploadBox.lastAssignedId);
               uploadArea.appendChild(newUploadBox);
               addFileUploadBox.lastAssignedId++;


           }
       
       </script>
    </div>
    <br /><br />
</div> 

Can you tell me why the System.Web.HttpContext.Current.Request.Files returns 0 files when I add 3 input file boxes and click upload.  This code works in a non DNN sample site, it just doesn't work when I try to do it as a module in DNN.

Why can't I access the HttpContext.Current.Request object?  Do I have to reference some DotNetNuke entity or something?

Please HELP.

Bill,

Thank you , Thank YOU.   The problem was that I had "Supports Partial Page Updates" checked for the module.  That was left over from when I was trying something different with asp components and the Update Panel.  

Thank you so much.  I was beginning to think that developing DNN Mods in Visual Web Dev Express was going to be way difficult and not worth the effort.

I had no idea how to trace that one out since I was getting ZERO files during my debugging sessions.

Thanks again.

Elgin