如何得到某文件类型在当前系统上的图标？

Question

如何得到某文件类型在当前系统上的图标？需求是得到某目录下的文件列表，并且
显示相应的图标（文件在资源浏览器中显示时的图标）。得到文件列表很容易，但不知道怎么得到相应的图标。谢谢！

Answer 1

[DllImport("Shell32.dll")]
        private static extern IntPtr SHGetFileInfo
        (
            string pszPath,
            uint dwFileAttributes,
            out SHFILEINFO psfi,
            uint cbfileInfo,
            SHGFI uFlags
        );
        private enum SHGFI
        {
            SHGFI_ICON = 0x000000100,     // get icon
            SHGFI_DISPLAYNAME = 0x000000200,     // get display name
            SHGFI_TYPENAME = 0x000000400,     // get type name
            SHGFI_ATTRIBUTES = 0x000000800,     // get attributes
            SHGFI_ICONLOCATION = 0x000001000,     // get icon location
            SHGFI_EXETYPE = 0x000002000,     // return exe type
            SHGFI_SYSICONINDEX = 0x000004000,     // get system icon index
            SHGFI_LINKOVERLAY = 0x000008000,     // put a link overlay on icon
            SHGFI_SELECTED = 0x000010000,     // show icon in selected state
            SHGFI_ATTR_SPECIFIED = 0x000020000,     // get only specified attributes
            SHGFI_LARGEICON = 0x000000000,     // get large icon
            SHGFI_SMALLICON = 0x000000001,     // get small icon
            SHGFI_OPENICON = 0x000000002,     // get open icon
            SHGFI_SHELLICONSIZE = 0x000000004,     // get shell size icon
            SHGFI_PIDL = 0x000000008,     // pszPath is a pidl
            SHGFI_USEFILEATTRIBUTES = 0x000000010     // use passed dwFileAttribute
        }        private struct SHFILEINFO
        {
            public SHFILEINFO(bool b)
            {
                hIcon = IntPtr.Zero; iIcon = 0; dwAttributes = 0; szDisplayName = ""; szTypeName = "";
            }
            public IntPtr hIcon;
            public int iIcon;
            public uint dwAttributes;
            [MarshalAs(UnmanagedType.LPStr, SizeConst = 260)]
            public string szDisplayName;
            [MarshalAs(UnmanagedType.LPStr, SizeConst = 80)]
            public string szTypeName;
        };        public static Icon GetIcon(string strPath, bool bSmall)
        {
            SHFILEINFO info = new SHFILEINFO(true);
            int cbFileInfo = Marshal.SizeOf(info);
            SHGFI flags;
            if (bSmall)
                flags = SHGFI.SHGFI_ICON | SHGFI.SHGFI_SMALLICON;//16*16小图标
            else
                flags = SHGFI.SHGFI_ICON | SHGFI.SHGFI_LARGEICON;//32*32大图标            SHGetFileInfo(strPath, 256, out info, (uint)cbFileInfo, flags);            return Icon.FromHandle(info.hIcon);
        }图标GetIcon(文件名,true)
如
 imageList1.Images.Add(GetIcon(text2, true));

Answer 2

http://www.codeproject.com/vb/net/VbNetExpTree.asp