MediaDownloader can't download Drive ExportList URL

[GoogleCodeExporter]

What steps will reproduce the problem?
1.string url = file.ExportLinks["application/pdf"];
2.downloader.DownloadAsync(url, outStream);
3.occur Null Pointer Exception

What is the expected output? What do you see instead?

download Google Drive's exported file.

What version of the product are you using?

1.4.0 beta

What is your operating system? On what IDE?

Windows8 and Visial Studio 2012

What is the .NET framework version?

.NET for Windows Store app

Please provide any additional information below.

Export PDF url format is :
  https://docs.google.com/feeds/download/spreadsheets/Export?key=${ACCESS_KEY}&exportFormat=pdf

and, I change MediaDownloader.cs line 191, work fine.

var builder = new RequestBuilder() { BaseUri = new Uri(url) };
string query = builder.BaseUri.Query;
if (query != null) {
    if (query.StartsWith("?")) query = query.Substring(1);
    string[] parameters = query.Split('&');
    foreach (string parameter in parameters) {
        string[] entry = parameter.Split('=');
        if (entry.Length != 2) continue;
        builder.AddParameter(RequestParameterType.Query, entry[0], entry[1]);
    }
}

Original issue reported on code.google.com by watt...@gmail.com on 24 Jul 2013 at 11:12

[GoogleCodeExporter]

Bug in media download.
If the user uses a link like 
"https://docs.google.com/feeds/download/spreadsheets/Export?key=${ACCESS_KEY}&ex
portFormat=pdf" while making the media download request the "exportFormat=pdf" 
is deleted from the request. So the request looks like:
"https://docs.google.com/feeds/download/spreadsheets/Export&?alt=media"

We should fix the way we generate a request (MediaDownloader line 192).

Original comment by pele...@google.com on 24 Jul 2013 at 1:36

• Changed state: Accepted
• Added labels: Component-Media, Milestone-Release1.5

[GoogleCodeExporter]

Original comment by pele...@google.com on 14 Aug 2013 at 3:24

• Added labels: Milestone-Release1.6
• Removed labels: Milestone-Release1.5

[GoogleCodeExporter]

Original comment by pele...@google.com on 13 Sep 2013 at 8:57

[GoogleCodeExporter]

https://codereview.appspot.com/13480044/

Original comment by pele...@google.com on 14 Sep 2013 at 1:52

• Changed state: Started

[GoogleCodeExporter]

Original comment by pele...@google.com on 15 Oct 2013 at 4:00

• Changed state: Fixed