检测应用程序数据的位置\ LocalLow [英] Detect the location of AppData\LocalLow

问题描述

我试图找到该的AppData \ LocalLow 文件夹的路径。

I'm trying to locate the path for the AppData\LocalLow folder.

我发现它使用一个例子：

I have found an example which uses:

string folder = "c:\users\" + Environment.UserName + @"\appdata\LocalLow";

这对于一个依赖于 C：和用户这似乎有点脆弱

我试图用

Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)

但是这给了我应用程序数据\本地，我需要LocalLow由于应用程序在其下运行的安全约束。这回我的服务的用户（至少连接到进程时）空。

but this gives me AppData\Local, and I need LocalLow due to the security constraints the application is running under. It returned blank for my service user as well (at least when attaching to the process).

任何其他建议？

推荐答案

在 Environment.SpecialFolder 枚举映射到的 CSIDL ，但没有 CSIDL 为 LocalLow 文件夹。所以，你必须使用 KNOWNFOLDERID 相反，使用 SHGetKnownFolderPath API：

The Environment.SpecialFolder enumeration maps to CSIDL, but there is no CSIDL for the LocalLow folder. So you have to use the KNOWNFOLDERID instead, with the SHGetKnownFolderPath API:

void Main()
{
    Guid localLowId = new Guid("A520A1A4-1780-4FF6-BD18-167343C5AF16");
    GetKnownFolderPath(localLowId).Dump();
}

string GetKnownFolderPath(Guid knownFolderId)
{
    IntPtr pszPath = IntPtr.Zero;
    try
    {
        int hr = SHGetKnownFolderPath(knownFolderId, 0, IntPtr.Zero, out pszPath);
        if (hr >= 0)
            return Marshal.PtrToStringAuto(pszPath);
        throw Marshal.GetExceptionForHR(hr);
    }
    finally
    {
        if (pszPath != IntPtr.Zero)
            Marshal.FreeCoTaskMem(pszPath);
    }
}

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

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