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copied!<p>I use the following code, not sure if it transparent backgrounds are supported but you could give it a try:</p> <pre><code>private const uint SHGFI_ICON = 0x100; private const uint SHGFI_LARGEICON = 0x0; private const uint SHGFI_SMALLICON = 0x1; private const uint SHGFI_DISPLAYNAME = 0x00000200; private const uint SHGFI_TYPENAME = 0x400; public static Icon GetSmallFileIcon(this FileInfo file) { if (file.Exists) { SHFILEINFO shFileInfo = new SHFILEINFO(); SHGetFileInfo(file.FullName, 0, ref shFileInfo, (uint)Marshal.SizeOf(shFileInfo), SHGFI_ICON | SHGFI_SMALLICON); return Icon.FromHandle(shFileInfo.hIcon); } else return SystemIcons.WinLogo; } public static Icon GetSmallFileIcon(string fileName) { return GetSmallFileIcon(new FileInfo(fileName)); } public static Icon GetLargeFileIcon(this FileInfo file) { if (file.Exists) { SHFILEINFO shFileInfo = new SHFILEINFO(); SHGetFileInfo(file.FullName, 0, ref shFileInfo, (uint)Marshal.SizeOf(shFileInfo), SHGFI_ICON | SHGFI_LARGEICON); return Icon.FromHandle(shFileInfo.hIcon); } else return SystemIcons.WinLogo; } public static Icon GetLargeFileIcon(string fileName) { return GetLargeFileIcon(new FileInfo(fileName)); } [StructLayout(LayoutKind.Sequential)] public struct SHFILEINFO { public SHFILEINFO(bool b) { hIcon = IntPtr.Zero; iIcon = IntPtr.Zero; dwAttributes = 0; szDisplayName = ""; szTypeName = ""; } public IntPtr hIcon; public IntPtr iIcon; public uint dwAttributes; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] public string szDisplayName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)] public string szTypeName; }; [DllImport("shell32.dll")] public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbSizeFileInfo, uint uFlags); </code></pre>

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