public static Icon IconFromExtensionUsingRegistry(string extension, SystemIconSize size)
{
if (extension == null)
{
throw new ArgumentNullException("extension");
}
if (extension.Length == 0 || extension == ".")
{
throw new ArgumentException("Empty extension", "extension");
}
if (extension[0] != '.')
{
extension = '.' + extension;
}
var iconLocation = GetExtensionIconStringFromRegistry(extension);
if (iconLocation == null)
{
return(null);
}
return(ExtractFromRegistryString(iconLocation, size));
}
//this will look throw the registry
//to find if the Extension have an icon.
public static Icon IconFromExtension(string extension,
SystemIconSize size)
{
// Add the '.' to the extension if needed
if (extension[0] != '.')
{
extension = '.' + extension;
}
//opens the registry for the wanted key.
RegistryKey Root = Registry.ClassesRoot;
RegistryKey ExtensionKey = Root.OpenSubKey(extension);
ExtensionKey.GetValueNames();
RegistryKey ApplicationKey =
Root.OpenSubKey(ExtensionKey.GetValue("").ToString());
//gets the name of the file that have the icon.
string IconLocation =
ApplicationKey.OpenSubKey("DefaultIcon").GetValue("").ToString();
string[] IconPath = IconLocation.Split(',');
if (IconPath[1] == null)
{
IconPath[1] = "0";
}
IntPtr[] Large = new IntPtr[1], Small = new IntPtr[1];
//extracts the icon from the file.
ExtractIconEx(IconPath[0],
Convert.ToInt16(IconPath[1]), Large, Small, 1);
return(size == SystemIconSize.Large ?
Icon.FromHandle(Large[0]) : Icon.FromHandle(Small[0]));
}
public static Icon FromExtension(string fileOrExtension, SystemIconSize size)
{
if (fileOrExtension == null)
{
throw new ArgumentNullException(nameof(fileOrExtension), PublicResources.ArgumentNull);
}
if (!Enum <SystemIconSize> .IsDefined(size))
{
throw new ArgumentOutOfRangeException(nameof(size), PublicResources.EnumOutOfRangeWithValues(size));
}
if (!OSUtils.IsWindows)
{
return(SystemIcons.WinLogo);
}
if (!Path.HasExtension(fileOrExtension))
{
fileOrExtension = Path.GetFileName(fileOrExtension) == fileOrExtension ? '.' + fileOrExtension : ".";
}
IntPtr handle = Shell32.GetFileIconHandle(fileOrExtension, size);
if (handle == IntPtr.Zero)
{
throw new ArgumentException(PublicResources.ArgumentInvalidString, nameof(fileOrExtension));
}
return(Icon.FromHandle(handle).ToManagedIcon());
}
internal static IntPtr GetFileIconHandle(string extension, SystemIconSize size)
{
var tempFileInfo = new SHFILEINFO();
NativeMethods.SHGetFileInfo(extension, 0, ref tempFileInfo, (uint)Marshal.SizeOf(tempFileInfo), SGHFI.SHGFI_ICON | SGHFI.SHGFI_USEFILEATTRIBUTES | (SGHFI)size);
return(tempFileInfo.hIcon);
}
public static Icon IconFromExtension(string extension)
{
SystemIconSize size = SystemIconSize.Small;
if (extension == null)
{
throw new ArgumentNullException("extension");
}
if (extension.Length == 0 || extension == ".")
{
throw new ArgumentException("Empty extension", "extension");
}
if (extension[0] != '.')
{
extension = '.' + extension;
}
var fileInfo = new SHFILEINFO();
SHGetFileInfo(extension, 0, out fileInfo, Marshal.SizeOf(fileInfo),
FileInfoFlags.SHGFI_ICON | FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (FileInfoFlags)size);
return(Icon.FromHandle(fileInfo.hIcon));
}
public static Icon[] FromFile(string fileName, SystemIconSize size)
{
if (fileName == null)
{
throw new ArgumentNullException(nameof(fileName), PublicResources.ArgumentNull);
}
if (!Enum <SystemIconSize> .IsDefined(size))
{
throw new ArgumentOutOfRangeException(nameof(size), PublicResources.EnumOutOfRangeWithValues(size));
}
if (!OSUtils.IsWindows)
{
Reflector.EmptyArray <Icon>();
}
IntPtr[][] handles = Shell32.ExtractIconHandles(fileName, size);
Icon[] result = new Icon[handles.Length];
for (int i = 0; i < handles.Length; i++)
{
result[i] = Icon.FromHandle(handles[i][0]).ToManagedIcon();
}
return(result);
}
internal static IntPtr GetStockIconHandle(StockIcon id, SystemIconSize size)
{
var iconInfo = new SHSTOCKICONINFO {
cbSize = (uint)Marshal.SizeOf(typeof(SHSTOCKICONINFO))
};
return(NativeMethods.SHGetStockIconInfo(id, SHGSI.ICON | (SHGSI)size, ref iconInfo) == 0 ? iconInfo.hIcon : IntPtr.Zero);
}
public static Icon ExtractFromRegistryString(string _regString_, SystemIconSize _size_)
{
string fileName;
int index;
ExtractInformationsFromRegistryString(_regString_, out fileName, out index);
return(ExtractOne(fileName, index, _size_));
}
public static Icon ExtractOne(string fileName, int index, SystemIconSize size)
{
try {
List <Icon> iconList = ExtractEx(fileName, size, index, 1);
return(iconList[0]);
} catch (UnableToExtractIconsException) {
throw new IconNotFoundException(fileName, index);
}
}
public static Icon ExtractOne(string _fileName_, int _index_, SystemIconSize _size_)
{
try
{
List <Icon> iconList = ExtractEx(_fileName_, _size_, _index_, 1);
return(iconList[0]);
}
catch (UnableToExtractIconsException)
{
throw new IconNotFoundException(_fileName_, _index_);
}
}
/// <summary>
/// Gets a native system icon as a managed <see cref="BitmapSource"/>.
/// </summary>
/// <param name="icon">The system icon.</param>
/// <param name="iconSize">The system icon size.</param>
/// <returns>Returns the system icon as <see cref="BitmapSource"/>.</returns>
public static BitmapSource GetSystemIcon(SystemIcon icon, SystemIconSize iconSize)
{
NativeMethods.SHSTOCKICONINFO sii = default(NativeMethods.SHSTOCKICONINFO);
sii.cbSize = (uint)Marshal.SizeOf(typeof(NativeMethods.SHSTOCKICONINFO));
Marshal.ThrowExceptionForHR(NativeMethods.SHGetStockIconInfo((NativeMethods.SHSTOCKICONID)icon, (NativeMethods.SHGSI)iconSize | NativeMethods.SHGSI.SHGSI_ICON, ref sii));
var iconSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHIcon(sii.hIcon, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
NativeMethods.DestroyIcon(sii.hIcon);
return(iconSource);
}
public static Icon IconFromExtension(string extension, SystemIconSize size)
{
RegistryKey currentUser = Registry.CurrentUser;
var className = "Unknown";
var classKey = currentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\"+extension+@"\OpenWithProgids");
if (classKey != null)
className = classKey.GetValueNames().First();
RegistryKey Root = Registry.ClassesRoot;
if (className.EndsWith("Folder"))
className = "Folder";
if (className.Equals("icofile"))
className = "Unknown";
RegistryKey ApplicationKey = Root.OpenSubKey(className);
RegistryKey CurrentVer = null;
try
{
CurrentVer = Root.OpenSubKey(ApplicationKey.OpenSubKey("CurVer").GetValue("").ToString());
}
catch (Exception) { }
if (CurrentVer != null)
ApplicationKey = CurrentVer;
if (ApplicationKey == null)
ApplicationKey = Root.OpenSubKey("Unknown");
string IconLocation =
ApplicationKey.OpenSubKey("DefaultIcon").GetValue("").ToString();
string[] IconPath = IconLocation.Split(',');
IntPtr[] Large = null;
IntPtr[] Small = null;
int iIconPathNumber = 0;
if (IconPath.Length > 1)
iIconPathNumber = 1;
else
iIconPathNumber = 0;
if (IconPath[iIconPathNumber] == null) IconPath[iIconPathNumber] = "0";
Large = new IntPtr[1];
Small = new IntPtr[1];
if (iIconPathNumber > 0)
ExtractIconEx(IconPath[0], Convert.ToInt16(IconPath[iIconPathNumber]), Large, Small, 1);
else
ExtractIconEx(IconPath[0], Convert.ToInt16(0), Large, Small, 1);
return size == SystemIconSize.Large ? Icon.FromHandle(Large[0]) : Icon.FromHandle(Small[0]);
}
public static Icon GetFolderIcon(SystemIconSize size, SystemFolderType systemFolderType)
{
var fileInfo = new SHFILEINFO();
SHGetFileInfo(System.Environment.CurrentDirectory, (int)FILE_ATTRIBUTE_DIRECTORY, out fileInfo,
Marshal.SizeOf(fileInfo),
FileInfoFlags.SHGFI_ICON | FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (FileInfoFlags)size |
(FileInfoFlags)systemFolderType);
var fromHandle = Icon.FromHandle(fileInfo.hIcon).Clone();
DestroyIcon(fileInfo.hIcon);
return((Icon)fromHandle);
}
public static Icon ExtractFromRegistryString(string regString, SystemIconSize size)
{
string fileName;
int index;
ExtractInformationsFromRegistryString(regString, out fileName, out index);
try
{
return(ExtractOne(fileName, index, size));
}
catch (IconNotFoundException)
{
return(null);
}
}
/// ------------------------------------------------------------------------------------
/// <summary>
///
/// </summary>
/// ------------------------------------------------------------------------------------
public static Icon IconFromExtensionShell(string extension, SystemIconSize size)
{
//add '.' if nessesry
if (extension[0] != '.')
{
extension = '.' + extension;
}
//temp struct for getting file shell info
SHFILEINFO fileInfo = new SHFILEINFO();
SHGetFileInfo(extension, 0, out fileInfo, Marshal.SizeOf(fileInfo),
FileInfoFlags.SHGFI_ICON | FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (FileInfoFlags)size);
return(Icon.FromHandle(fileInfo.hIcon));
}
public static Icon IconFromExtensionShell(string extension, SystemIconSize size)
{
//add '.' if nessesry
if (extension[0] != '.') extension = '.' + extension;
//temp struct for getting fileName shell info
SHFILEINFO fileInfo = new SHFILEINFO();
SHGetFileInfo(
extension,
0,
out fileInfo,
Marshal.SizeOf(fileInfo),
FileInfoFlags.SHGFI_ICON | FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (FileInfoFlags)size);
return Icon.FromHandle(fileInfo.hIcon);
}
//this will look throw the registry
//to find if the Extension have an icon.
public static Icon IconFromExtension(string _extension_,
SystemIconSize _size_)
{
// Add the '.' to the extension if needed
if (_extension_[0] != '.')
{
_extension_ = '.' + _extension_;
}
//opens the registry for the wanted key.
RegistryKey root = Registry.ClassesRoot;
RegistryKey extensionKey = root.OpenSubKey(_extension_);
if (extensionKey != null)
{
extensionKey.GetValueNames();
RegistryKey applicationKey =
root.OpenSubKey(extensionKey.GetValue("").ToString());
//gets the name of the file that have the icon.
if (applicationKey != null)
{
string iconLocation =
applicationKey.OpenSubKey("DefaultIcon").GetValue("").ToString();
List <string> iconPath = iconLocation.Split(',').ToList();
if (iconPath.Count == 1)
{
iconPath.Add("0");
}
if (iconPath[1] == null)
{
iconPath[1] = "0";
}
IntPtr[] large = new IntPtr[1], small = new IntPtr[1];
//extracts the icon from the file.
ExtractIconEx(iconPath[0],
Convert.ToInt16(iconPath[1]), large, small, 1);
return(_size_ == SystemIconSize.Large ?
Icon.FromHandle(large[0]) : Icon.FromHandle(small[0]));
}
}
return(null);
}
/// <summary>
/// Return a bitmap of the file icon, based on the file extension
/// </summary>
/// <param name="path">File path or filename containing the extension</param>
/// <param name="largeIcons">Small or Large</param>
/// <returns></returns>
public static Bitmap FileIcon(string path, bool largeIcons = false, bool shellMethod = false)
{
Icon icon = null;
SystemIconSize size = largeIcons ? SystemIconSize.Large : SystemIconSize.Small;
if (shellMethod)
{
icon = IconFromExtensionShell(path.Extension(), size);
}
else
{
icon = IconFromExtension(path.Extension(), size);
}
if (icon != null)
{
return(icon.ToBitmap());
}
return(null);
}
/// <summary>
/// Used to access system folder icons.
/// </summary>
/// <param name="size">Specify large or small icons.</param>
/// <param name="folderType">Specify open or closed FolderType.</param>
/// <returns>System.Drawing.Icon</returns>
public static System.Drawing.Icon GetFolderIcon(SystemIconSize size, FolderType folderType)
{
// Need to add size check, although errors generated at present!
uint flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (FolderType.Open == folderType)
{
flags += Shell32.SHGFI_OPENICON;
}
if (SystemIconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON;
}
else
{
flags += Shell32.SHGFI_LARGEICON;
}
// Get the folder icon
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
Shell32.SHGetFileInfo("dummy", // Windows 7 needs a string passed to this regardless. Previous versions of windows could handle null
Shell32.FILE_ATTRIBUTE_DIRECTORY,
ref shfi,
(uint)System.Runtime.InteropServices.Marshal.SizeOf(shfi),
flags);
if (shfi.hIcon != IntPtr.Zero)
{
System.Drawing.Icon.FromHandle(shfi.hIcon); // Load the icon from an HICON handle
// Now clone the icon, so that it can be successfully stored in an ImageList
System.Drawing.Icon icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon(shfi.hIcon); // Cleanup
return(icon);
}
else
{
return(null);
}
}
private static List <Icon> ExtractEx(string fileName, SystemIconSize size, int firstIconIndex, int iconCount)
{
List <Icon> iconList = new List <Icon>();
switch (size)
{
case SystemIconSize.Large:
ExtractEx(fileName, iconList, null, firstIconIndex, iconCount);
break;
case SystemIconSize.Small:
ExtractEx(fileName, null, iconList, firstIconIndex, iconCount);
break;
default:
throw new ArgumentOutOfRangeException(nameof(size));
}
return(iconList);
}
public static Icon IconFromExtensionShell(string _extension_, SystemIconSize _size_)
{
//add '.' if nessesry
if (_extension_[0] != '.')
{
_extension_ = '.' + _extension_;
}
//temp struct for getting file shell info
Shfileinfo fileInfo = new Shfileinfo();
SHGetFileInfo(
_extension_,
0,
out fileInfo,
Marshal.SizeOf(fileInfo),
FileInfoFlags.ShgfiIcon | FileInfoFlags.ShgfiUsefileattributes | (FileInfoFlags)_size_);
return(Icon.FromHandle(fileInfo.hIcon));
}
public static List <Icon> ExtractEx(string _fileName_, SystemIconSize _size_,
int _firstIconIndex_, int _iconCount_)
{
List <Icon> iconList = new List <Icon>();
switch (_size_)
{
case SystemIconSize.Large:
ExtractEx(_fileName_, iconList, null, _firstIconIndex_, _iconCount_);
break;
case SystemIconSize.Small:
ExtractEx(_fileName_, null, iconList, _firstIconIndex_, _iconCount_);
break;
default:
throw new ArgumentOutOfRangeException("_size_");
}
return(iconList);
}
public static Icon IconFromExtensionShell(string extension, SystemIconSize size)
{
//add '.' if nessesry
//if (extension[0] != '.') extension = '.' + extension;
//temp struct for getting file shell info
SHFILEINFO fileInfo = new SHFILEINFO();
SHGetFileInfo(
extension,
0,
ref fileInfo,
(uint)Marshal.SizeOf(fileInfo),
(uint)FileInfoFlags.SHGFI_ICON | (uint)FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (uint)size);
if (fileInfo.hIcon != IntPtr.Zero)
{
return(Icon.FromHandle(fileInfo.hIcon));
}
return(null);
}
public static Icon IconFromExtension(string extension, SystemIconSize size)
{
Icon rv = null;
string className = "Unknown";
using (RegistryKey classKey =
Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\" + extension + @"\OpenWithProgids"))
{
if (null != classKey)
{
className = classKey.GetValueNames().First();
}
}
if (className.EndsWith("Folder") || extension == DirectoryExtension)
{
className = "Folder";
}
if (className.Equals("icofile"))
{
className = "Unknown";
}
try
{
rv = IconFromClassName(size, className);
}
catch { }
if (null == rv)
{
rv = IconFromClassName(size, "Unknown");
}
return(rv);
}
/// <summary>
/// Returns an icon for a given file - indicated by the name parameter.
/// </summary>
/// <param name="name">Pathname for file.</param>
/// <param name="size">Large or small</param>
/// <param name="linkOverlay">Whether to include the link icon</param>
/// <returns>System.Drawing.Icon</returns>
public static System.Drawing.Icon GetFileIcon(string name, SystemIconSize size, bool linkOverlay)
{
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
uint flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (true == linkOverlay)
{
flags += Shell32.SHGFI_LINKOVERLAY;
}
/* Check the size specified for return. */
if (SystemIconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON;
}
else
{
flags += Shell32.SHGFI_LARGEICON;
}
Shell32.SHGetFileInfo(name,
Shell32.FILE_ATTRIBUTE_NORMAL,
ref shfi,
(uint)System.Runtime.InteropServices.Marshal.SizeOf(shfi),
flags);
if (shfi.hIcon != IntPtr.Zero)
{
// Copy (clone) the returned icon to a new object, thus allowing us to clean-up properly
System.Drawing.Icon icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon(shfi.hIcon); // Cleanup
return(icon);
}
else
{
return(null);
}
}
public static Icon IconFromExtension(string extension, SystemIconSize size)
{
Icon rv = null;
string className = "Unknown";
using (RegistryKey classKey =
Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\" + extension + @"\OpenWithProgids"))
{
if (null != classKey)
{
className = classKey.GetValueNames().First();
}
}
if (className.EndsWith("Folder") || extension == DirectoryExtension)
{
className = "Folder";
}
if (className.Equals("icofile"))
{
className = "Unknown";
}
try
{
rv = IconFromClassName(size, className);
}
catch { }
if (null == rv)
{
rv = IconFromClassName(size, "Unknown");
}
return rv;
}
public static List<Icon> ExtractEx(string fileName, SystemIconSize size,
int firstIconIndex, int iconCount)
{
List<Icon> iconList = new List<Icon>();
switch (size)
{
case SystemIconSize.Large:
ExtractEx(fileName, iconList, null, firstIconIndex, iconCount);
break;
case SystemIconSize.Small:
ExtractEx(fileName, null, iconList, firstIconIndex, iconCount);
break;
default:
throw new ArgumentOutOfRangeException("size");
}
return iconList;
}
public static Icon IconFromExtension(string extension, SystemIconSize size)
{
RegistryKey currentUser = Registry.CurrentUser;
var className = "Unknown";
var classKey = currentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\" + extension + @"\OpenWithProgids");
if (classKey != null)
{
className = classKey.GetValueNames().First();
}
RegistryKey Root = Registry.ClassesRoot;
if (className.EndsWith("Folder"))
{
className = "Folder";
}
if (className.Equals("icofile"))
{
className = "Unknown";
}
RegistryKey ApplicationKey = Root.OpenSubKey(className);
RegistryKey CurrentVer = null;
try
{
CurrentVer = Root.OpenSubKey(ApplicationKey.OpenSubKey("CurVer").GetValue("").ToString());
}
catch (Exception) { }
if (CurrentVer != null)
{
ApplicationKey = CurrentVer;
}
if (ApplicationKey == null)
{
ApplicationKey = Root.OpenSubKey("Unknown");
}
string IconLocation =
ApplicationKey.OpenSubKey("DefaultIcon").GetValue("").ToString();
string[] IconPath = IconLocation.Split(',');
IntPtr[] Large = null;
IntPtr[] Small = null;
int iIconPathNumber = 0;
if (IconPath.Length > 1)
{
iIconPathNumber = 1;
}
else
{
iIconPathNumber = 0;
}
if (IconPath[iIconPathNumber] == null)
{
IconPath[iIconPathNumber] = "0";
}
Large = new IntPtr[1];
Small = new IntPtr[1];
if (iIconPathNumber > 0)
{
ExtractIconEx(IconPath[0], Convert.ToInt16(IconPath[iIconPathNumber]), Large, Small, 1);
}
else
{
ExtractIconEx(IconPath[0], Convert.ToInt16(0), Large, Small, 1);
}
return(size == SystemIconSize.Large ? Icon.FromHandle(Large[0]) : Icon.FromHandle(Small[0]));
}
public static Icon IconFromExtensionUsingRegistry(string extension, SystemIconSize size)
{
if (extension == null)
{
throw new ArgumentNullException(nameof(extension));
}
if (extension.Length == 0 || extension == ".")
{
throw new ArgumentException("Empty extension", nameof(extension));
}
if (extension[0] != '.')
{
extension = '.' + extension;
}
string iconLocation = GetExtensionIconStringFromRegistry(extension);
if (iconLocation == null)
{
return null;
}
return ExtractFromRegistryString(iconLocation, size);
}
public static Icon IconFromExtensionShell(string extension, SystemIconSize size)
{
//add '.' if nessesry
//if (extension[0] != '.') extension = '.' + extension;
//temp struct for getting file shell info
SHFILEINFO fileInfo = new SHFILEINFO();
SHGetFileInfo(
extension,
0,
ref fileInfo,
(uint)Marshal.SizeOf(fileInfo),
(uint)FileInfoFlags.SHGFI_ICON | (uint)FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (uint)size);
if (fileInfo.hIcon != IntPtr.Zero)
{
return Icon.FromHandle(fileInfo.hIcon);
}
return null;
}
/// <summary>
/// Used to access system folder icons.
/// </summary>
/// <param name="size">Specify large or small icons.</param>
/// <param name="folderType">Specify open or closed FolderType.</param>
/// <returns>System.Drawing.Icon</returns>
public static System.Drawing.Icon GetFolderIcon( SystemIconSize size, FolderType folderType )
{
// Need to add size check, although errors generated at present!
uint flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (FolderType.Open == folderType)
{
flags += Shell32.SHGFI_OPENICON;
}
if (SystemIconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON;
}
else
{
flags += Shell32.SHGFI_LARGEICON;
}
// Get the folder icon
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
Shell32.SHGetFileInfo( "dummy", // Windows 7 needs a string passed to this regardless. Previous versions of windows could handle null
Shell32.FILE_ATTRIBUTE_DIRECTORY,
ref shfi,
(uint) System.Runtime.InteropServices.Marshal.SizeOf(shfi),
flags );
if (shfi.hIcon != IntPtr.Zero)
{
System.Drawing.Icon.FromHandle(shfi.hIcon); // Load the icon from an HICON handle
// Now clone the icon, so that it can be successfully stored in an ImageList
System.Drawing.Icon icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon(shfi.hIcon); // Cleanup
return icon;
}
else
return null;
}
public static Icon IconFromExtensionUsingRegistry(string extension, SystemIconSize size)
{
if (extension == null) throw new ArgumentNullException("extension");
if (extension.Length == 0 || extension == ".") throw new ArgumentException("Empty extension", "extension");
if (extension[0] != '.') extension = '.' + extension;
var iconLocation = GetExtensionIconStringFromRegistry(extension);
if (iconLocation == null) return null;
return ExtractFromRegistryString(iconLocation, size);
}
public static List <Icon> Extract(string _fileName_, SystemIconSize _size_)
{
int iconCount = GetIconsCountInFile(_fileName_);
return(ExtractEx(_fileName_, _size_, 0, iconCount));
}
public static Icon GetFolderIcon(SystemIconSize size, SystemFolderType systemFolderType)
{
var fileInfo = new SHFILEINFO();
SHGetFileInfo(Environment.CurrentDirectory, (int) FILE_ATTRIBUTE_DIRECTORY, out fileInfo,
Marshal.SizeOf(fileInfo),
FileInfoFlags.SHGFI_ICON | FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (FileInfoFlags) size |
(FileInfoFlags)systemFolderType);
var fromHandle = Icon.FromHandle(fileInfo.hIcon).Clone();
DestroyIcon(fileInfo.hIcon);
return (Icon)fromHandle;
}
public static Icon IconFromExtension(string extension, SystemIconSize size)
{
if (extension == null) throw new ArgumentNullException("extension");
if (extension.Length == 0 || extension == ".") throw new ArgumentException("Empty extension", "extension");
if (extension[0] != '.') extension = '.' + extension;
var fileInfo = new SHFILEINFO();
SHGetFileInfo(extension, 0, out fileInfo, Marshal.SizeOf(fileInfo),
FileInfoFlags.SHGFI_ICON | FileInfoFlags.SHGFI_USEFILEATTRIBUTES | (FileInfoFlags)size);
return Icon.FromHandle(fileInfo.hIcon);
}
private static Icon IconFromClassName(SystemIconSize size, string className)
{
Icon rv = null;
// TODO: using / Dispose for reg keys?
RegistryKey root = Registry.ClassesRoot;
RegistryKey applicationKey = root.OpenSubKey(className);
RegistryKey currentVer = null;
RegistryKey curVerSubKey = applicationKey.OpenSubKey("CurVer");
if (null != curVerSubKey)
{
object curVerValue = curVerSubKey.GetValue(String.Empty);
if (null != curVerValue)
{
currentVer = root.OpenSubKey(curVerValue.ToString());
}
}
if (null != currentVer)
{
applicationKey = currentVer;
}
if (null == applicationKey)
{
applicationKey = root.OpenSubKey("Unknown");
}
RegistryKey appKeySubKey = applicationKey.OpenSubKey("DefaultIcon");
string iconLocation = null;
if (null != appKeySubKey)
{
object appKeySubKeyValue = appKeySubKey.GetValue(String.Empty);
if (null != appKeySubKeyValue)
{
iconLocation = appKeySubKeyValue.ToString();
}
}
if (null != iconLocation)
{
string[] iconPath = iconLocation.Split(',');
int iIconPathNumber = iconPath.Length > 1 ? 1 : 0;
if (null == iconPath[iIconPathNumber])
{
iconPath[iIconPathNumber] = "0";
}
IntPtr[] large = new IntPtr[1];
IntPtr[] small = new IntPtr[1];
if (iIconPathNumber > 0)
{
ExtractIconEx(iconPath[0], Convert.ToInt16(iconPath[iIconPathNumber]), large, small, 1);
}
else
{
ExtractIconEx(iconPath[0], Convert.ToInt16(0), large, small, 1);
}
rv = size == SystemIconSize.Large ? Icon.FromHandle(large[0]) : Icon.FromHandle(small[0]);
}
return rv;
}
public static Icon DirectoryIcon(SystemIconSize size)
{
return IconFromExtension(DirectoryExtension, size);
}
private static Icon IconFromClassName(SystemIconSize size, string className)
{
Icon rv = null;
var root = Registry.ClassesRoot;
var applicationKey = root.OpenSubKey(className);
RegistryKey currentVer = null;
RegistryKey curVerSubKey = applicationKey.OpenSubKey("CurVer");
if (null != curVerSubKey)
{
object curVerValue = curVerSubKey.GetValue(String.Empty);
if (null != curVerValue)
{
currentVer = root.OpenSubKey(curVerValue.ToString());
}
}
if (null != currentVer)
{
applicationKey = currentVer;
}
if (null == applicationKey)
{
applicationKey = root.OpenSubKey("Unknown");
}
RegistryKey appKeySubKey = applicationKey.OpenSubKey("DefaultIcon");
string iconLocation = null;
if (null != appKeySubKey)
{
object appKeySubKeyValue = appKeySubKey.GetValue(String.Empty);
if (null != appKeySubKeyValue)
{
iconLocation = appKeySubKeyValue.ToString();
}
}
if (null != iconLocation)
{
string[] iconPath = iconLocation.Split(',');
int iIconPathNumber = iconPath.Length > 1 ? 1 : 0;
if (null == iconPath[iIconPathNumber])
{
iconPath[iIconPathNumber] = "0";
}
IntPtr[] large = new IntPtr[1];
IntPtr[] small = new IntPtr[1];
if (iIconPathNumber > 0)
{
ExtractIconEx(iconPath[0], Convert.ToInt16(iconPath[iIconPathNumber]), large, small, 1);
}
else
{
ExtractIconEx(iconPath[0], Convert.ToInt16(0), large, small, 1);
}
rv = size == SystemIconSize.Large ? Icon.FromHandle(large[0]) : Icon.FromHandle(small[0]);
}
return(rv);
}
public static Icon ExtractFromRegistryString(string regString, SystemIconSize size)
{
string fileName;
int index;
ExtractInformationsFromRegistryString(regString, out fileName, out index);
try
{
return ExtractOne(fileName, index, size);
}
catch (IconNotFoundException)
{
return null;
}
}
public static Icon ExtractOne(string fileName, int index, SystemIconSize size)
{
try
{
List<Icon> iconList = ExtractEx(fileName, size, index, 1);
return iconList[0];
}
catch (UnableToExtractIconsException e)
{
throw new IconNotFoundException(fileName, index, e);
}
}
//this will look throw the registry
//to find if the Extension have an icon.
public static Icon IconFromExtension(string extension,
SystemIconSize size)
{
// Add the '.' to the extension if needed
if (extension[0] != '.') extension = '.' + extension;
//opens the registry for the wanted key.
RegistryKey Root = Registry.ClassesRoot;
RegistryKey ExtensionKey = Root.OpenSubKey(extension);
ExtensionKey.GetValueNames();
RegistryKey ApplicationKey =
Root.OpenSubKey(ExtensionKey.GetValue("").ToString());
RegistryKey CurrentVer = null;
try
{
CurrentVer = Root.OpenSubKey(ApplicationKey.OpenSubKey("CurVer").GetValue("").ToString());
}
catch
{
//current version not found... carry on without it?
}
if (CurrentVer != null)
ApplicationKey = CurrentVer;
//gets the name of the file that have the icon.
string IconLocation =
ApplicationKey.OpenSubKey("DefaultIcon").GetValue("").ToString();
string[] IconPath = IconLocation.Split(',');
IntPtr[] Large = null;
IntPtr[] Small = null;
int iIconPathNumber = 0;
if (IconPath.Length > 1)
iIconPathNumber = 1;
else
iIconPathNumber = 0;
if (IconPath[iIconPathNumber] == null) IconPath[iIconPathNumber] = "0";
Large = new IntPtr[1];
Small = new IntPtr[1];
//extracts the icon from the file.
if (iIconPathNumber > 0)
{
ExtractIconEx(IconPath[0],
Convert.ToInt16(IconPath[iIconPathNumber]), Large, Small, 1);
}
else
{
ExtractIconEx(IconPath[0],
Convert.ToInt16(0), Large, Small, 1);
}
return size == SystemIconSize.Large ?
Icon.FromHandle(Large[0]) : Icon.FromHandle(Small[0]);
}
public static List<Icon> Extract(string fileName, SystemIconSize size)
{
int iconCount = GetIconsCountInFile(fileName);
return ExtractEx(fileName, size, 0, iconCount);
}
public static List <System.Drawing.Icon> Extract(string fileName, SystemIconSize size)
{
int iconCount = GetIconsCountInFile(fileName);
return(ExtractEx(fileName, size, 0, iconCount));
}
//this will look throw the registry
//to find if the Extension have an icon.
public static Icon IconFromExtension(string extension,
SystemIconSize size)
{
// Add the '.' to the extension if needed
if (extension[0] != '.') extension = '.' + extension;
//opens the registry for the wanted key.
RegistryKey Root = Registry.ClassesRoot;
RegistryKey ExtensionKey = Root.OpenSubKey(extension);
ExtensionKey.GetValueNames();
RegistryKey ApplicationKey =
Root.OpenSubKey(ExtensionKey.GetValue("").ToString());
//gets the name of the file that have the icon.
string IconLocation =
ApplicationKey.OpenSubKey("DefaultIcon").GetValue("").ToString();
string[] IconPath = IconLocation.Split(',');
if (IconLocation.Split(',').Length < 2)
{
IconPath = new string[2];
IconPath[0] = IconLocation.Split(',')[0];
IconPath[1] = null;
}
if (IconPath[1] == null) IconPath[1] = "0";
IntPtr[] Large = new IntPtr[1], Small = new IntPtr[1];
//extracts the icon from the file.
ExtractIconEx(IconPath[0],
Convert.ToInt16(IconPath[1]), Large, Small, 1);
return size == SystemIconSize.Large ?
Icon.FromHandle(Large[0]) : Icon.FromHandle(Small[0]);
}
/// <summary> /// Gets default system icon and type description for a directory. /// </summary> /// <param name="iconSize">Returned icon size.</param> /// <returns></returns> public static FileIconAndType GetDefaultDirectoryIconAndType(SystemIconSize iconSize = SystemIconSize.Small) => GetFileIconAndType(DirectoryKey, FileAttributes.Directory, iconSize);
/// <summary>
/// Retrieves system icon and type description for specified file system path.
/// </summary>
/// <param name="path">File system path.</param>
/// <param name="attr">File attributes, if null, file attributes will be read from path.</param>
/// <param name="iconSize">Returned icon size.</param>
/// <returns>File icon and type structure.</returns>
public static FileIconAndType GetFileIconAndType(string path, FileAttributes?attr = null, SystemIconSize iconSize = SystemIconSize.Small)
{
if (path != null && path[1] == ':' && path.Length == 2)
{
path += @"\";
}
var shFileInfo = new NativeMethods.SHFILEINFO();
int cbFileInfo = Marshal.SizeOf(shFileInfo);
var flags = NativeMethods.SHGFI.TypeName;
if (attr != null && path.Length > 3)
{
flags |= NativeMethods.SHGFI.UseFileAttributes;
}
switch (iconSize)
{
case SystemIconSize.Small: flags |= NativeMethods.SHGFI.Icon | NativeMethods.SHGFI.SmallIcon; break;
case SystemIconSize.Medium: flags |= NativeMethods.SHGFI.Icon; break;
case SystemIconSize.Large: flags |= NativeMethods.SHGFI.Icon | NativeMethods.SHGFI.LargeIcon; break;
}
NativeMethods.SHGetFileInfo(path, (int)attr, out shFileInfo, (uint)cbFileInfo, flags);
return(new FileIconAndType
{
Icon = (shFileInfo.hIcon != IntPtr.Zero) ? GetImageFromHIcon(shFileInfo.hIcon) : null,
TypeDescription = shFileInfo.szTypeName
});
}
public static Icon ExtractFromRegistryString(string regString, SystemIconSize size)
{
string fileName;
int index;
ExtractInformationsFromRegistryString(regString, out fileName, out index);
return ExtractOne(fileName, index, size);
}
/// <summary> /// Gets default system icon and type description for a file. /// </summary> /// <param name="iconSize">Returned icon size.</param> /// <returns></returns> public static FileIconAndType GetDefaultFileIconAndType(SystemIconSize iconSize = SystemIconSize.Small) => GetFileIconAndType(FileKey, FileAttributes.Normal, iconSize);
/// <summary>
/// Returns an icon for a given file - indicated by the name parameter.
/// </summary>
/// <param name="name">Pathname for file.</param>
/// <param name="size">Large or small</param>
/// <param name="linkOverlay">Whether to include the link icon</param>
/// <returns>System.Drawing.Icon</returns>
public static System.Drawing.Icon GetFileIcon(string name, SystemIconSize size, bool linkOverlay)
{
Shell32.SHFILEINFO shfi = new Shell32.SHFILEINFO();
uint flags = Shell32.SHGFI_ICON | Shell32.SHGFI_USEFILEATTRIBUTES;
if (true == linkOverlay) flags += Shell32.SHGFI_LINKOVERLAY;
/* Check the size specified for return. */
if (SystemIconSize.Small == size)
{
flags += Shell32.SHGFI_SMALLICON ;
}
else
{
flags += Shell32.SHGFI_LARGEICON ;
}
Shell32.SHGetFileInfo( name,
Shell32.FILE_ATTRIBUTE_NORMAL,
ref shfi,
(uint) System.Runtime.InteropServices.Marshal.SizeOf(shfi),
flags );
if (shfi.hIcon != IntPtr.Zero)
{
// Copy (clone) the returned icon to a new object, thus allowing us to clean-up properly
System.Drawing.Icon icon = (System.Drawing.Icon)System.Drawing.Icon.FromHandle(shfi.hIcon).Clone();
User32.DestroyIcon(shfi.hIcon); // Cleanup
return icon;
}
else
return null;
}