您好,
Windows提供的说明文件扩展名,如控制面板项目的.cpl文件和PowerISO文件为.daa文件。有没有什么办法可以获取.NET这个数据?使用im C#,但可以读取所有其他.NET语言。也有一种方式来获得扩展的默认图标呢?任何帮助将是AP preciated。
Windows provides descriptions for file extension such as "Control Panel Item" for .cpl files and "PowerISO File" for .daa files. Is there any way I can obtain this data in .NET ? Im using C# but can read all the other .NET languages. Also is there a way to obtain the default icon of the extensions as well ? Any help would be appreciated.
在此先感谢
您可以使用 的SHGetFileInfo
API来获取这些信息。这里有一个包装方式:
You can use the SHGetFileInfo
API to get that information. Here's a wrapper method:
public static string GetFileTypeDescription(string fileNameOrExtension)
{
SHFILEINFO shfi;
if (IntPtr.Zero != SHGetFileInfo(
fileNameOrExtension,
FILE_ATTRIBUTE_NORMAL,
out shfi,
(uint)Marshal.SizeOf(typeof(SHFILEINFO)),
SHGFI_USEFILEATTRIBUTES | SHGFI_TYPENAME))
{
return shfi.szTypeName;
}
return null;
}
[DllImport("shell32")]
private static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, out SHFILEINFO psfi, uint cbFileInfo, uint flags);
[StructLayout(LayoutKind.Sequential)]
private struct SHFILEINFO
{
public IntPtr hIcon;
public int iIcon;
public uint dwAttributes;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string szDisplayName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
public string szTypeName;
}
private const uint FILE_ATTRIBUTE_READONLY = 0x00000001;
private const uint FILE_ATTRIBUTE_HIDDEN = 0x00000002;
private const uint FILE_ATTRIBUTE_SYSTEM = 0x00000004;
private const uint FILE_ATTRIBUTE_DIRECTORY = 0x00000010;
private const uint FILE_ATTRIBUTE_ARCHIVE = 0x00000020;
private const uint FILE_ATTRIBUTE_DEVICE = 0x00000040;
private const uint FILE_ATTRIBUTE_NORMAL = 0x00000080;
private const uint FILE_ATTRIBUTE_TEMPORARY = 0x00000100;
private const uint FILE_ATTRIBUTE_SPARSE_FILE = 0x00000200;
private const uint FILE_ATTRIBUTE_REPARSE_POINT = 0x00000400;
private const uint FILE_ATTRIBUTE_COMPRESSED = 0x00000800;
private const uint FILE_ATTRIBUTE_OFFLINE = 0x00001000;
private const uint FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x00002000;
private const uint FILE_ATTRIBUTE_ENCRYPTED = 0x00004000;
private const uint FILE_ATTRIBUTE_VIRTUAL = 0x00010000;
private const uint SHGFI_ICON = 0x000000100; // get icon
private const uint SHGFI_DISPLAYNAME = 0x000000200; // get display name
private const uint SHGFI_TYPENAME = 0x000000400; // get type name
private const uint SHGFI_ATTRIBUTES = 0x000000800; // get attributes
private const uint SHGFI_ICONLOCATION = 0x000001000; // get icon location
private const uint SHGFI_EXETYPE = 0x000002000; // return exe type
private const uint SHGFI_SYSICONINDEX = 0x000004000; // get system icon index
private const uint SHGFI_LINKOVERLAY = 0x000008000; // put a link overlay on icon
private const uint SHGFI_SELECTED = 0x000010000; // show icon in selected state
private const uint SHGFI_ATTR_SPECIFIED = 0x000020000; // get only specified attributes
private const uint SHGFI_LARGEICON = 0x000000000; // get large icon
private const uint SHGFI_SMALLICON = 0x000000001; // get small icon
private const uint SHGFI_OPENICON = 0x000000002; // get open icon
private const uint SHGFI_SHELLICONSIZE = 0x000000004; // get shell size icon
private const uint SHGFI_PIDL = 0x000000008; // pszPath is a pidl
private const uint SHGFI_USEFILEATTRIBUTES = 0x000000010; // use passed dwFileAttribute
(大多数的常量实际上没有用在code,但我的情况下,把他们无论如何要适应code到您的特定需求)
(most of the constants aren't actually used in that code, but I put them anyway in case you want to adapt the code to your specific needs)
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