C#: How can I retrieve the description of a folder?

Question

All folders have a type: Most of them are named "File folder", but some are called "Mediaserver" or "Local harddrive" (Translations). How do I retrieve those folder types using C#? I found this for files: How can I get the description of a file extension in .NET

Answer 1

SHGetFileInfo is the function you need. You need to pass the flag FILE_ATTRIBUTE_DIRECTORY as parameter to dwFileAttributes parameter.

Based on the same answer you linked I've modified the code to make it work for directories.

public static string GetFileFolderTypeDescription(string fileNameOrExtension)
{
    SHFILEINFO shfi;
    if (IntPtr.Zero != SHGetFileInfo(
                        fileNameOrExtension,
                        FILE_ATTRIBUTE_NORMAL | FILE_ATTRIBUTE_DIRECTORY,
                        out shfi,
                        (uint)Marshal.SizeOf(typeof(SHFILEINFO)),
                        SHGFI_USEFILEATTRIBUTES | SHGFI_TYPENAME))
    {
        return shfi.szTypeName;
    }
    return null;
}