如何确定Windows的“Download文件夹”路径？ [英] How do I determine the Windows 'Download folder' path?

问题描述

在我的机器，它在这里：

On my machine, it's here:

string downloadsPath = Path.Combine(
   Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
   "Downloads");

但同事的机器，这个文件夹犯规存在，而且他的下载文件夹是在他的我的文档文件夹中。 <击>我们在Windows 7上都 *

* 修改：其实，事实证明，他没有运行。他自己的机器，但在Windows Server 2003机器上的应用程序

*Edit: in fact, it turns out he was not running the app on his own machine but a Windows Server 2003 machine.

推荐答案

Windows不定义的CSIDL ，在下载文件夹，它通过的 Environment.SpecialFolder 枚举。

Windows does not define a CSIDL for the Downloads folder and it is not available through the Environment.SpecialFolder enumeration.

然而，新的Vista 已知文件夹 API确实与 FOLDERID_Downloads的ID定义它 。可能获得的实际值的最简单方法是P /调用 SHGetKnownFolderPath 。

However, the new Vista Known Folder API does define it with the ID of FOLDERID_Downloads. Probably the easiest way to obtain the actual value is to P/invoke SHGetKnownFolderPath.

public static class KnownFolder
{
    public static readonly Guid Downloads = new Guid("374DE290-123F-4565-9164-39C4925E467B");
}

[DllImport("shell32.dll", CharSet=CharSet.Unicode)]
static extern int SHGetKnownFolderPath([MarshalAs(UnmanagedType.LPStruct)] Guid rfid, uint dwFlags, IntPtr hToken, out string pszPath);

static void Main(string[] args)
{
    string downloads;
    SHGetKnownFolderPath(KnownFolder.Downloads, 0, IntPtr.Zero, out downloads);
    Console.WriteLine(downloads);
}

注意，P /上pinvoke.net则启动定是不正确，因为它失败使用Unicode字符集。此外，我已采取了这个API返回的内存由COM分配器分配的事实。在P的默认编组/调用上面是释放与 CoTaskMemFree 返回的内存，这是完美的满足我们的需要。

Note that the P/invoke given on pinvoke.net is incorrect since it fails to use Unicode character set. Also I have taken advantage of the fact that this API returns memory allocated by the COM allocator. The default marshalling of the P/invoke above is to free the returned memory with CoTaskMemFree which is perfect for our needs.

请注意，这是一个Vista和API起来，不要试图把它称为对XP / 2003或更低。

Be careful that this is a Vista and up API and do not attempt to call it on XP/2003 or lower.

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