CODEWITHSUNDEEP
c#.netasp.net-mvc-3file-io
Marta
Marta

Reputation: 2947

Changing file name for download in MVC3

Problem: I have file named by their Id from database. And when somebody want to downaload it I need to change it to it's real name. File on the server looks for example like: http://localhost:34256/Content/uploads/23. So for example my file name is 23 but i need to change it to textfile1.txt.

I have created a partial view with list of those files:

@foreach (var item in Model)
{   
    <a href="/Content/uploads/@item.Id" title="@Html.Encode(item.FileName)">
        <img src="@item.IcoSrc" /><br />
        @item.FileName
    </a>    
}

Where @item.FileName is real name of file. When somebody download file from this list, he get's file named @item.Id and not @item.FileName. How can I change it?

I am using MVC3 and .NET framevork 4.

Any help much appreciated!

Upvotes: 3

Views: 7805

Answers (4)

Darin Dimitrov
Darin Dimitrov

Reputation: 1038740

You could create a controller action that will serve the file:

public ActionResult Download(string id, string name)
{
    var file = Server.MapPath("~/Content/uploads/" + id);
    return File(file, "application/octet-stream", name);
}

and then point the link to this controller action:

@foreach (var item in Model)
{   
    <a href="@Url.Action("Download", new { id = item.Id, name = item.FileName })" title="@Html.Encode(item.FileName)">
        <img src="@item.IcoSrc" /><br />
        @item.FileName
    </a>    
}

Upvotes: 8

Moo-Juice
Moo-Juice

Reputation: 38825

As Anders said, you need to use Content-Disposition.

To do this, create a controller-derivative that has a method .e.g Download, that takes the ID of the file. You can then read the ID (and obtain the original filename), and use the FileResult class to deliver the file (you can set the filename using the FileDownloadName property which will set the disposition for you.

Upvotes: 0

agarcian
agarcian

Reputation: 3965

Since you are using MVC you can create an action that returns a FileContentResult.

Read this article for the details: http://www.mikesdotnetting.com/Article/125/ASP.NET-MVC-Uploading-and-Downloading-Files

The following snippet is extracted from that article. Notice that you can control the filename property:

public FileContentResult GetFile(int id)
{
  SqlDataReader rdr; byte[] fileContent = null; 
  string mimeType = "";string fileName = "";
  const string connect = @"Server=.\SQLExpress;Database=FileTest;Trusted_Connection=True;";

  using (var conn = new SqlConnection(connect))
  {
    var qry = "SELECT FileContent, MimeType, FileName FROM FileStore WHERE ID = @ID";
    var cmd = new SqlCommand(qry, conn);
    cmd.Parameters.AddWithValue("@ID", id);
    conn.Open();
    rdr = cmd.ExecuteReader();
    if (rdr.HasRows)
    {
      rdr.Read();
      fileContent = (byte[])rdr["FileContent"];
      mimeType = rdr["MimeType"].ToString();
      fileName = rdr["FileName"].ToString();
    }
  }
  return File(fileContent, mimeType, fileName);
}

Upvotes: 4

Anders Abel
Anders Abel

Reputation: 69260

You can't do it in the link to the file. You have to do it by setting a Content-Disposition header in the response delivering the file back to the client.

See this SO post for more info: https://stackoverflow.com/q/3102276/280222

Upvotes: 1

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