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Dec 10th, 2007

Download File

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Hi experts,
I need a linkbutton/button to download the files which my clients have uploaded.

Below is my upload method and it works.

ASP.NET Syntax (Toggle Plain Text)
protected void uploadFile()
    {
        String projectID = (String)Session["projId"];
        //change the file name
        if (!FileUpload.FileName.Equals(""))
        {
            // Create a new folder in Docs folder (folder name = projectID)
            System.IO.Directory.CreateDirectory(Server.MapPath("Docs/") + projectID);
 
            // Save the file into the new folder.
            FileUpload.PostedFile.SaveAs(Server.MapPath("Docs/" + projectID + "/" + FileUpload.FileName));
            lblFile.Text = FileUpload.FileName + " is uploaded!";
            lblFile.Visible = true;
 
        }
    }//end of method
protected void uploadFile()
    {
        String projectID = (String)Session["projId"];
        //change the file name
        if (!FileUpload.FileName.Equals(""))
        {
            // Create a new folder in Docs folder (folder name = projectID)
            System.IO.Directory.CreateDirectory(Server.MapPath("Docs/") + projectID);

            // Save the file into the new folder.
            FileUpload.PostedFile.SaveAs(Server.MapPath("Docs/" + projectID + "/" + FileUpload.FileName));
            lblFile.Text = FileUpload.FileName + " is uploaded!";
            lblFile.Visible = true;

        }
    }//end of method

However, it's not working for downloading of file (in another asp)
May I know how can I do that?

ASP.NET Syntax (Toggle Plain Text)
protected void btnLink_OnClientClick(object sender, EventArgs e)
{
   String projectID = (String)Session["projId"];
   String file1 = System.IO.Path.GetFileName(Server.MapPath("Docs/" + pid + "/"));
}
protected void btnLink_OnClientClick(object sender, EventArgs e)
{
   String projectID = (String)Session["projId"];
   String file1 = System.IO.Path.GetFileName(Server.MapPath("Docs/" + pid + "/"));
}

The files format that are uploaded are not consistent. Usually it's excel, word or pdf format.

Please help. Thanks!

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dotNetDummi

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Dec 10th, 2007

Re: Download File

Not 100% sure what you are trying to do? Upload or Download a file. For download you need to replace the response stream with the file. This link is pretty good for downloading:

http://www.xefteri.com/articles/show.cfm?id=8

Use lots of try catch blocks...

shaulf

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Dec 10th, 2007

Re: Download File

Hi. Thanks for your reply.
I'm trying to download files. By the way, I'm using C# so doesn't really quite understand the VB code.

I tried this .

protected void btnLink_OnClientClick(object sender, EventArgs e)
{
String pid = Convert.ToString(Session["pid"]);
String file = System.IO.Path.GetFileName(Server.MapPath("Docs/" + pid + "/EP/"));

Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + file);
Response.AddHeader("Content-Length", file.Length.ToString());
Response.ContentType = "application/octet-stream";
Response.WriteFile(file);
Response.End();
}

But it doesn't work .

Error msg : Access to the path 'C:\Documents and Settings\[machineName]\My Documents\[projectName]' is denied.

Is it because I upload at my documents?
What should I do? Please help. Thanks

dotNetDummi

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Dec 10th, 2007

Re: Download File

set your permissions to allow access to my documents.
saying that i remember not being allowed access to a servers My Documents folder even with permissions set.
use another file location i.e.
c:\WEB APP FILES\

Fungus1487

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Dec 10th, 2007

Re: Download File

Thanks for your reply.

Nope, I realised that variable ''file'' is empty.
But I thought that's the way to get the filename and extension in a directory path?

May I know how to do that?

Last edited by dotNetDummi; Dec 10th, 2007 at 8:24 pm.

dotNetDummi

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Dec 10th, 2007

Re: Download File

well theres no file your just referencing the directory "Docs/##/EP/" ? try passing a filename through ?

also 'file.Length.ToString());' will not return the files size as its just a string variable you will need to do a

ASP.NET Syntax (Toggle Plain Text)
FileInfo finfo = new FileInfo(Server.MapPath(MyFile));
long FileInBytes = finfo.Length;
FileInfo finfo = new FileInfo(Server.MapPath(MyFile));
long FileInBytes = finfo.Length;

then use the 'FileInBytes' attribute to show the file length

Fungus1487

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Dec 10th, 2007

Re: Download File

after re-reading you say you want them to download THE files.
the only way to do a batch download is either open a window for each file, create a zip file on the fly with all files inside, or have aprompt for them to download file sone at a time by selecting them

Fungus1487

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Dec 10th, 2007

Re: Download File

Thanks for your reply.
You're fast.

Actually the thing is I wouldn't know what are the files that are being uploaded in the first place.

dotNetDummi

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Dec 10th, 2007

Re: Download File

okay, I pass a filename already. It works.

Now I have to solve the problem.
To download the files which is "unknown" to my clients' users.

dotNetDummi

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Dec 10th, 2007

Re: Download File

I got it . I used another method found online.

ASP.NET Syntax (Toggle Plain Text)
DirectoryInfo diSource = new DirectoryInfo(Server.MapPath("Docs/" + pid + "/EP/"));
        string ExactFilename = string.Empty;
 
        foreach (FileInfo file in diSource.GetFiles(@"*.*"))
        {
            ExactFilename = file.FullName;
        }      
        System.Diagnostics.Process.Start(ExactFilename);
DirectoryInfo diSource = new DirectoryInfo(Server.MapPath("Docs/" + pid + "/EP/"));
        string ExactFilename = string.Empty;

        foreach (FileInfo file in diSource.GetFiles(@"*.*"))
        {
            ExactFilename = file.FullName;
        }      
        System.Diagnostics.Process.Start(ExactFilename);

Just that it opened the application immediately without the filedialog box.

dotNetDummi

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