C# 如何从OneDrive下载文件

我想从一个驱动器下载公用文件夹中的文件，但它不下载文件。 以下是场景：

在公用文件夹中，我有另一个文件夹，其中包含多个文件，可以广泛访问。 出于测试目的，我共享了公用文件夹中的所有文件（我不知道这是否是正确的共享方式）

以下链接供我下载该文件：

从共享文件夹链接

从公用文件夹链接

直接链接-

我正在使用

BackgroundTransferRequest

使用以下代码下载文件：

string filePathToDownload = string.Empty, fileName = "111.mp3";
filePathToDownload = "http://1drv.ms/1z9XlW6";

Uri transferUri = new Uri(Uri.EscapeUriString(filePathToDownload), UriKind.RelativeOrAbsolute);
BackgroundTransferRequest transferRequest = new BackgroundTransferRequest(transferUri);
transferRequest.Method = "GET";
transferRequest.TransferPreferences = TransferPreferences.AllowCellularAndBattery;

Uri downloadUri = new Uri(DataSource.TEMPDOWNLOADLOCATION + fileName, UriKind.RelativeOrAbsolute);
transferRequest.DownloadLocation = downloadUri;
transferRequest.Tag = fileName;

该文件为300Kb，但仅下载6KB

我如何从上面的链接（其中任何一个）直接下载该文件

---

谢谢

基本上，你不能。这些链接是指向显示您共享的文件的web内容的链接。如果您的场景不介意要求用户登录到OneDrive，那么您可以使用Live SDK访问这些文件

要从Live SDK访问公用文件夹，您需要使用Live SDK获取公用文件夹的文件夹id，或者将复制的URL中的id转换为Live SDK使用的格式：

folder.<user-id>.<folder-resid>

这样你就可以打电话了

https://apis.live.net:443/v5.0/folder.DBBC281099F4FE69.DBBC281099F4FE69!646/files?access_token=<valid_token>

https://apis.live.net:443/v5.0/folder.DBBC281099F4FE69.DBBC281099F4FE69!646/文件？访问\u令牌=

---

并检索各个文件的ID，然后可以通过Live SDK下载这些文件，详细信息如下：

尝试类似的方法

  //we first need the file id
  string id = string.Empty;
  //we need to get all of the filenames stored in the root of the skydrive account
  LiveOperationResult result = await this.client.GetAsync("me/skydrive/files");

  //lets make a list of all these filenames
  List<object> items = result.Result["data"] as List<object>;

  //for every filename, check if it is what we want, in this case "sample.txt"
  //if it is what we want, get the id and save it to out already defined id value
  foreach (object item in items)
  {
      IDictionary<string, object> file = item as IDictionary<string, object>;
      if (file["name"].ToString() == "sample.txt")
      {
            id = file["id"].ToString();
      }
  }

  //to download the file we need to use the id + "/content"
  LiveDownloadOperationResult result2 = await client.DownloadAsync(string.Format("{0}/content", id));

  //once the file had downloaded, lets copy it to IsolatedStorage
 Stream stream = result2.Stream;
 using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
 {
     using (IsolatedStorageFileStream fileToSave = storage.OpenFile("sample.txt", FileMode.Create, FileAccess.ReadWrite))
     {
            stream.CopyTo(fileToSave);
            stream.Flush();
            stream.Close();
     }
}

---

下面是使用

txt

文件作为示例。查看此示例：

如果将url中的单词

redir

替换为

download

，则会得到原始文件而不是网页，即

---

对于那些仍在寻找答案的人。 查找文件路径的最简单方法是转到web上的一个驱动器，右键单击所需文件并选择“嵌入”。在右边，我们看到信息窗口，将文件集成到一个页面中。iframe中是文件的源。然后我们必须将单词embed替换为单词download，就这样。

看看这些吗？

  //we first need the file id
  string id = string.Empty;
  //we need to get all of the filenames stored in the root of the skydrive account
  LiveOperationResult result = await this.client.GetAsync("me/skydrive/files");

  //lets make a list of all these filenames
  List<object> items = result.Result["data"] as List<object>;

  //for every filename, check if it is what we want, in this case "sample.txt"
  //if it is what we want, get the id and save it to out already defined id value
  foreach (object item in items)
  {
      IDictionary<string, object> file = item as IDictionary<string, object>;
      if (file["name"].ToString() == "sample.txt")
      {
            id = file["id"].ToString();
      }
  }

  //to download the file we need to use the id + "/content"
  LiveDownloadOperationResult result2 = await client.DownloadAsync(string.Format("{0}/content", id));

  //once the file had downloaded, lets copy it to IsolatedStorage
 Stream stream = result2.Stream;
 using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
 {
     using (IsolatedStorageFileStream fileToSave = storage.OpenFile("sample.txt", FileMode.Create, FileAccess.ReadWrite))
     {
            stream.CopyTo(fileToSave);
            stream.Flush();
            stream.Close();
     }
}

using Microsoft.Live;
using Microsoft.Live.Controls;