How to upload multiple files using multiple fileupload controls in ASP.NET?

Question

1.00/5 (2 votes)

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I have a webpage(.aspx) which contains MULTIPLE FileUpload controls.

ASP.NET

<asp:FileUpload ID="flpProspectus"  AllowMultiple="true" class="form-control" runat="server"  Style="width: 40%; margin-top: -12px;" />
<asp:FileUpload ID="flpOrientation"  AllowMultiple="true" class="form-control" runat="server"  Style="width: 40%; margin-top: -12px;" />

Default.aspx.cs

C#

public void FileUpload1()
    {
        if (flpProspectus.HasFile)
        {
            string fileExtension = System.IO.Path.GetExtension(flpProspectus.FileName);
            int fileSize = flpProspectus.PostedFile.ContentLength;
            HttpFileCollection hfc = Request.Files;
            string[] arr = new string[5];
            for (int i = 0; i < hfc.Count; i++)
            {
                HttpPostedFile hpf = hfc[i];
                if (hpf.ContentLength > 0)
                {
                    hpf.SaveAs(Server.MapPath("~/college/fileupload3/") + System.IO.Path.GetFileName(hpf.FileName));
                    string filepath = Server.MapPath("~/college/fileupload3/");
                    string path = "college/fileupload3/" + hpf.FileName;
                    if (i < 5)
                    {
                        arr[i] = path;
                        path1 = arr[0]; path2 = arr[1]; path3 = arr[2]; path4 = arr[3]; path5 = arr[4];

                    }

                }
            }
        }
    }

What I have tried:

Here, Request.Files will get collectively all files from both the FileUploadControls.

I am NOT able to IDENTIFY which file(s) are from specific FileUpload control?

I know its possible in 4.5 but my current framework is 4.0 and i don't want to upgrade to 4.5. Any solution using existing 4.0 framework??

Help appreciated!

Please note: This is not DUPLICATE question as my requirement is to upload and identify the files of different FileUpload controls on single page.

Posted 24-Mar-17 22:53pm

Member 12183079

Updated 25-Mar-17 10:32am

Bryian Tan

v2

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Bryian Tan · Accepted Answer · 2017-03-25T10:30:00

Why not use the PostedFiles property? You might need to rewrite the "if (i < 5)...", not clear what you trying to do there.

Updated solution to target Framework 4.0

C#

if (flpProspectus.HasFile || flpOrientation.HasFile)
{
    string fileExtension = string.Empty; // System.IO.Path.GetExtension(flpProspectus.FileName);
    int fileSize = 0;// flpProspectus.PostedFile.ContentLength;
    HttpFileCollection hfc = Request.Files;
    string[] arr = new string[5];
    string path1, path2, path3, path4, path5 = string.Empty;
    string filePath = string.Empty;

    for (int i = 0; i < hfc.Count; i++)
    {
        if (hfc.GetKey(i) == "flpOrientation")
        {
            filePath = "college/fileupload3";
        }

        if (hfc.GetKey(i) == "flpProspectus")
        {
            filePath = "college/fileupload4";
        }

        fileExtension = System.IO.Path.GetExtension(hfc[i].FileName);
        fileSize = hfc[i].ContentLength;
        if (hfc[i].ContentLength > 0)
        {
            hfc[i].SaveAs(Server.MapPath(string.Format("~/{0}/", filePath)) + System.IO.Path.GetFileName(hfc[i].FileName));
            string filepath = Server.MapPath(string.Format("~/{0}/", filePath));
            string path = string.Format("{0}/", filePath) + hfc[i].FileName;
            if (i < 5)
            {
                arr[i] = path;
                path1 = arr[0]; path2 = arr[1]; path3 = arr[2]; path4 = arr[3]; path5 = arr[4];
            }
        }
    }
}