public Image GetIcon(string aPath, FileIconSize aSize)
{
var info = new SafeNativeMethods.SHFILEINFO();
var sInfo = Marshal.SizeOf(info);
var flags = SafeNativeMethods.SHGFI.Icon | SafeNativeMethods.SHGFI.SysIconIndex;
if (SafeNativeMethods.SHGetFileInfo(aPath, 0, out info, (uint)sInfo, flags) == 0)
{
flags = SafeNativeMethods.SHGFI.Icon | SafeNativeMethods.SHGFI.SmallIcon | SafeNativeMethods.SHGFI.UseFileAttributes;
if (SafeNativeMethods.SHGetFileInfo(aPath, 0x80, out info, (uint)sInfo, flags) == 0)
{
throw new ArgumentException("Cannot get the Icon Index");
}
}
SafeNativeMethods.DestroyIcon(info.hIcon);
var hIcon = SafeNativeMethods.ImageList_GetIcon(ImageLists[(int)aSize], info.iIcon, 0);
if (hIcon == IntPtr.Zero)
{
throw new ArgumentException("Cannot get the Icon");
}
var bmp = Icon.FromHandle(hIcon).ToBitmap();
SafeNativeMethods.DestroyIcon(hIcon);
return(bmp);
}
public static Image GetFileIcon(string fullpath, FileIconSize size)
{
UnsafeNativeMethods.SHFILEINFO info = new UnsafeNativeMethods.SHFILEINFO();
uint flags = UnsafeNativeMethods.SHGFI_USEFILEATTRIBUTES | UnsafeNativeMethods.SHGFI_ICON;
if (size == FileIconSize.Small)
{
flags |= UnsafeNativeMethods.SHGFI_SMALLICON;
}
int retval = UnsafeNativeMethods.SHGetFileInfo(fullpath, UnsafeNativeMethods.FILE_ATTRIBUTE_NORMAL,
ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0)
{
return(null); // error occured
}
System.Drawing.Icon icon = System.Drawing.Icon.FromHandle(info.hIcon);
ImageList imglist = new ImageList();
imglist.ImageSize = icon.Size;
imglist.Images.Add(icon);
Image image = imglist.Images[0];
icon.Dispose();
return(image);
}
public static Image GetFileIconAsImage(string fullpath, FileIconSize size)
{
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_ICON;
if (size == FileIconSize.Small)
{
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullpath, FILE_ATTRIBUTE_NORMAL, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0)
{
return(null); // error occured
}
System.Drawing.Icon icon = System.Drawing.Icon.FromHandle(info.hIcon);
//ImageList imglist = new ImageList();
//imglist.ImageSize = icon.Size;
//imglist.Images.Add(icon);
//Image image = imglist.Images[0];
//icon.Dispose();
//return image;
return(icon.ToBitmap());
}
public static void UpdateSystemImageList(ImageList imageList, FileIconSize size, bool isSelected, Image deletedImage)
{
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_SYSICONINDEX;
if (size == FileIconSize.Small)
{
flags |= SHGFI_SMALLICON;
}
if (isSelected == true)
{
flags |= SHGFI_OPENICON;
}
int imageHandle = SHGetFileInfo("C:\\", 0, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
int iconCount = ImageList_GetImageCount(imageHandle);
for (int i = imageList.Images.Count; i < iconCount; i++)
{
IntPtr iconHandle = (IntPtr)ImageList_GetIcon(imageHandle, i, 0);
try {
if (iconHandle.ToInt64() != 0)
{
Icon icon = Icon.FromHandle(iconHandle);
imageList.Images.Add(icon);
icon.Dispose();
DestroyIcon(iconHandle);
}
}
catch {
imageList.Images.Add(deletedImage);
}
}
}
public static Icon ExtractOne(string fileName, int index, FileIconSize size)
{
try {
List <Icon> iconList = ExtractEx(fileName, size, index, 1);
return(iconList[0]);
} catch (UnableToExtractIconsException) {
throw new IconNotFoundException(fileName, index);
}
}
public static Image GetIcon(string path, FileIconSize size)
{
if (impl != null) {
try {
return impl.GetIcon(path, size);
}
catch (Exception) {
}
}
return null;
}
public static Image GetIcon(string path, FileIconSize size)
{
if (impl != null)
{
try {
return(impl.GetIcon(path, size));
}
catch (Exception) {
}
}
return(null);
}
// TOP LEVEL API
public static MemoryStream GetFileIcon(string name, FileIconSize size)
{
Icon icon = FileIconUtils.IconFromExtension(name.GetAfter("."), size);
using (icon) {
using (var bmp = icon.ToBitmap()) {
MemoryStream ms = new MemoryStream();
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
ms.Seek(0, SeekOrigin.Begin);
return(ms);
}
}
}
public static int GetFolderIconIndex(string fullpath, FileIconSize size)
{
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_SYSICONINDEX;
if (size == FileIconSize.Small)
{
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullpath, FILE_ATTRIBUTE_DIRECTORY, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0)
{
return(-1); // error
}
return(info.iIcon);
}
public static List <Icon> ExtractEx(string fileName, FileIconSize size,
int firstIconIndex, int iconCount)
{
List <Icon> iconList = new List <Icon>();
switch (size)
{
case FileIconSize.Large:
ExtractEx(fileName, iconList, null, firstIconIndex, iconCount);
break;
case FileIconSize.Small:
ExtractEx(fileName, null, iconList, firstIconIndex, iconCount);
break;
default:
throw new ArgumentOutOfRangeException("size");
}
return(iconList);
}
public static Icon GetFileIcon(string fullpath, FileIconSize size)
{
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_ICON;
if (size == FileIconSize.Small)
{
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullpath, FILE_ATTRIBUTE_NORMAL, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0)
{
return(null); // error occured
}
System.Drawing.Icon icon = System.Drawing.Icon.FromHandle(info.hIcon);
return(icon);
}
///// <summary>
///// 删除文件，如果文件还被其他程序引用，将不会真正从文件系统删除
///// </summary>
//public static void DeleteFile(string fileID)
//{
// string[] fileIDs = new string[] { fileID };
// DeleteFiles(fileIDs);
//}
///// <summary>
///// 删除文件，如果文件还被其他程序引用，将不会真正从文件系统删除
///// </summary>
///// <param name="fileID"></param>
//public static void DeleteFiles(IEnumerable<string> fileIDs)
//{
// DeleteFiles(fileIDs, null);
//}
//public delegate void DeleteFileCallback(PhysicalFileCollection deleteFiles);
//public static void DeleteFiles(IEnumerable<string> fileIDs, DeleteFileCallback callback)
//{
// if (ValidateUtil.HasItems<string>(fileIDs) == false)
// return;
// List<string> deleteFileIds = new List<string>(fileIDs);
// foreach (FileActionBase action in s_UploadActions.Values)
// {
// IEnumerable<string> tempIDs = action.CreateInstance().GetAlsoUsedFileIds(deleteFileIds);
// foreach (string tempID in tempIDs)
// {
// deleteFileIds.Remove(tempID);
// }
// //如果要删的文件都仍在被使用，那就无需删除任何文件，直接返回
// if (deleteFileIds.Count == 0)
// return;
// }
// PhysicalFileCollection deleteFiles = FileDao.Instance.GetFiles(deleteFileIds);
// List<string> filePaths = FileDao.Instance.DeleteFiles(deleteFileIds);
// foreach (string filePath in filePaths)
// {
// string savePath = IOUtil.JoinPath(Globals.GetPath(SystemDirecotry.Upload_File), filePath);
// if (File.Exists(savePath))
// {
// File.Delete(savePath);
// }
// }
// if (callback != null)
// callback(deleteFiles);
//}
#endregion
#region 被否决的
public static string GetExtensionsIcon(string fileName, FileIconSize iconSize)
{
string extendname = string.Empty;
if (fileName.Contains("."))
{
extendname = fileName.Substring(fileName.LastIndexOf('.') + 1);
}
extendname = extendname.ToLower();
Dictionary <FileIconSize, Dictionary <string, string> > fileIconList = GetExtensionsImages();
if (fileIconList[iconSize].ContainsKey(extendname))
{
return(fileIconList[iconSize][extendname]);
}
else if (fileIconList[iconSize].ContainsKey("default"))
{
return(fileIconList[iconSize]["default"]);
}
else
{
return(string.Empty);
}
}
//this will look throw the registry
//to find if the Extension have an icon.
public static Icon IconFromExtension(string extension,
FileIconSize size)
{
// Add the '.' to the extension if needed
if (extension[0] != '.')
{
extension = '.' + extension;
}
extension = extension.ToLower();
//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 == FileIconSize.Large ?
Icon.FromHandle(Large[0]) : Icon.FromHandle(Small[0]));
}
public OpenFileBehavior(Type openFileBehaviorSourceType, bool showIcon = true, FileIconSize iconSize = FileIconSize.Small,
Image defaultImage = null, Image invalidPathImage = null, CompletionMode mode = CompletionMode.FilesAndDirectories,
string filter = null, string initDir = "", string fileMask = "All files (*.*)|*.*")
: base(openFileBehaviorSourceType, showIcon, iconSize, defaultImage, invalidPathImage, mode, filter)
{
_initDir = initDir;
_fileMask = fileMask;
}
public static List <Icon> Extract(string fileName, FileIconSize size)
{
int iconCount = GetIconsCountInFile(fileName);
return(ExtractEx(fileName, size, 0, iconCount));
}
/// <summary>
/// Initializes a new instance of the <see cref="FileIconOptions"/> class.
/// </summary>
/// <param name="fileIconSize">Size of the file icon.</param>
public FileIconOptions(FileIconSize fileIconSize)
{
Size = fileIconSize.ToString();
}
/// <summary>
/// Gets the icon associated with a given file.
/// </summary>
/// <param name="fullpath">Path to file.</param>
/// <param name="iconSize">Size of icon to return.</param>
/// <returns>Icon associated with the given file.</returns>
public static Icon GetFileIcon(String fullpath, FileIconSize iconSize)
{
var retval = 0;
var info = new Win32API.Shell32.SHFILEINFO();
uint flags = Win32API.Shell32.SHGFI_USEFILEATTRIBUTES | Win32API.Shell32.SHGFI_ICON;
if (iconSize == FileIconSize.Small)
{
flags |= Win32API.Shell32.SHGFI_SMALLICON;
}
else if (iconSize == FileIconSize.Large)
{
flags |= Win32API.Shell32.SHGFI_LARGEICON;
}
retval = Win32API.Shell32.SHGetFileInfo(fullpath, Win32API.Shell32.FILE_ATTRIBUTE_NORMAL, ref info, Marshal.SizeOf(info), flags);
if (retval == 0) return null;
return Icon.FromHandle(info.hIcon);
}
///// <summary>
///// 删除文件，如果文件还被其他程序引用，将不会真正从文件系统删除
///// </summary>
//public static void DeleteFile(string fileID)
//{
// string[] fileIDs = new string[] { fileID };
// DeleteFiles(fileIDs);
//}
///// <summary>
///// 删除文件，如果文件还被其他程序引用，将不会真正从文件系统删除
///// </summary>
///// <param name="fileID"></param>
//public static void DeleteFiles(IEnumerable<string> fileIDs)
//{
// DeleteFiles(fileIDs, null);
//}
//public delegate void DeleteFileCallback(PhysicalFileCollection deleteFiles);
//public static void DeleteFiles(IEnumerable<string> fileIDs, DeleteFileCallback callback)
//{
// if (ValidateUtil.HasItems<string>(fileIDs) == false)
// return;
// List<string> deleteFileIds = new List<string>(fileIDs);
// foreach (FileActionBase action in s_UploadActions.Values)
// {
// IEnumerable<string> tempIDs = action.CreateInstance().GetAlsoUsedFileIds(deleteFileIds);
// foreach (string tempID in tempIDs)
// {
// deleteFileIds.Remove(tempID);
// }
// //如果要删的文件都仍在被使用，那就无需删除任何文件，直接返回
// if (deleteFileIds.Count == 0)
// return;
// }
// PhysicalFileCollection deleteFiles = FileDao.Instance.GetFiles(deleteFileIds);
// List<string> filePaths = FileDao.Instance.DeleteFiles(deleteFileIds);
// foreach (string filePath in filePaths)
// {
// string savePath = IOUtil.JoinPath(Globals.GetPath(SystemDirecotry.Upload_File), filePath);
// if (File.Exists(savePath))
// {
// File.Delete(savePath);
// }
// }
// if (callback != null)
// callback(deleteFiles);
//}
#endregion
#region 被否决的
public static string GetExtensionsIcon(string fileName, FileIconSize iconSize)
{
string extendname = string.Empty;
if (fileName.Contains("."))
extendname = fileName.Substring(fileName.LastIndexOf('.') + 1);
extendname = extendname.ToLower();
Dictionary<FileIconSize, Dictionary<string, string>> fileIconList = GetExtensionsImages();
if (fileIconList[iconSize].ContainsKey(extendname))
return fileIconList[iconSize][extendname];
else if (fileIconList[iconSize].ContainsKey("default"))
return fileIconList[iconSize]["default"];
else
return string.Empty;
}
public static OpenFileBehavior Create(Type openFileBehaviorSourceType, bool showIcon = true, FileIconSize iconSize = FileIconSize.Small,
Image defaultImage = null, Image invalidPathImage = null, CompletionMode mode = CompletionMode.FilesAndDirectories,
string filter = null, string initDir = "%TEMP%", string fileMask = "All files (*.*)|*.*")
{
return((OpenFileBehavior)Behavior.Create(typeof(OpenFileBehavior), openFileBehaviorSourceType, new object[8]
{
(object)showIcon,
(object)iconSize,
(object)defaultImage,
(object)invalidPathImage,
(object)mode,
(object)filter,
(object)initDir,
(object)fileMask
}));
}
