/// <summary>
/// 获取系统文件夹默认图标
/// </summary>
/// <param name="folderName">文件夹名称,如果想获取自定义文件夹图标，请指定完整的文件夹名称（如 F:\test)</param>
/// <param name="isSmallIcon">是否返回小图标</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>返回一个Icon类型的文件夹图标对象</returns>
public static Icon GetFolderIcon(string folderName, bool isSmallIcon, out long imageIndex)
{
imageIndex = ErrorFolderIndex;
if (String.IsNullOrEmpty(folderName))
{
return(null);
}
SHFileInfo shfi = new SHFileInfo();
SHFileInfoFlags uFlags = SHFileInfoFlags.Icon | SHFileInfoFlags.ShellIconSize |
SHFileInfoFlags.UseFileAttributes;
if (isSmallIcon)
{
uFlags |= SHFileInfoFlags.SmallIcon;
}
else
{
uFlags |= SHFileInfoFlags.LargeIcon;
}
int iTotal = (int)SHGetFileInfo(folderName, FileAttribute.Directory, ref shfi, (uint)Marshal.SizeOf(shfi),
uFlags);
//或int iTotal = (int)SHGetFileInfo("", 0, ref shfi, (uint)Marshal.SizeOf(shfi), SHFileInfoFlags.Icon | SHFileInfoFlags.SmallIcon);
Icon icon = null;
if (iTotal > 0)
{
icon = Icon.FromHandle(shfi.hIcon).Clone() as Icon;
imageIndex = shfi.iIcon.ToInt64();
}
DestroyIcon(shfi.hIcon); //释放资源
return(icon);
}
/// <summary>
/// 获取磁盘驱动器图标
/// </summary>
/// <param name="driverMark">有效的磁盘标号，如C、D、I等等，不区分大小写</param>
/// <param name="isSmallIcon">标识是获取小图标还是获取大图标</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>返回一个Icon类型的磁盘驱动器图标对象</returns>
public static Icon GetDriverIcon(char driverMark, bool isSmallIcon, out long imageIndex)
{
imageIndex = ErrorDriverIndex;
//非有效盘符，返回封装的磁盘图标
if (driverMark < 'a' && driverMark > 'z' && driverMark < 'A' && driverMark > 'Z')
{
return(null);
}
string driverName = driverMark.ToString().ToUpper() + ":\\";
SHFileInfoFlags uFlags = SHFileInfoFlags.Icon | SHFileInfoFlags.ShellIconSize | SHFileInfoFlags.UseFileAttributes;
if (isSmallIcon)
{
uFlags |= SHFileInfoFlags.SmallIcon;
}
else
{
uFlags |= SHFileInfoFlags.LargeIcon;
}
Icon icon = GetIcon(driverName, FileAttribute.Normal, uFlags, out imageIndex);
if (imageIndex == ErrorFileIndex)
{
imageIndex = ErrorDriverIndex;
}
return(icon);
}
/// <summary>
/// 获取磁盘驱动器图标
/// </summary>
/// <param name="driverMark">有效的磁盘标号，如C、D、I等等，不区分大小写</param>
/// <param name="isSmallIcon">标识是获取小图标还是获取大图标</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>返回一个Icon类型的磁盘驱动器图标对象</returns>
public static Icon GetDriverIcon(char driverMark, bool isSmallIcon, out long imageIndex)
{
imageIndex = ErrorDriverIndex;
//非有效盘符，返回封装的磁盘图标
if (driverMark < 'a' && driverMark > 'z' && driverMark < 'A' && driverMark > 'Z')
{
return(null);
}
string driverName = driverMark.ToString().ToUpper() + ":\\";
SHFileInfo shfi = new SHFileInfo();
SHFileInfoFlags uFlags = SHFileInfoFlags.Icon | SHFileInfoFlags.ShellIconSize | SHFileInfoFlags.UseFileAttributes;
if (isSmallIcon)
{
uFlags |= SHFileInfoFlags.SmallIcon;
}
else
{
uFlags |= SHFileInfoFlags.LargeIcon;
}
int iTotal = (int)SHGetFileInfo(driverName, FileAttribute.Normal, ref shfi, (uint)Marshal.SizeOf(shfi), uFlags);
//int iTotal = (int)SHGetFileInfo(driverName, 0, ref shfi, (uint)Marshal.SizeOf(shfi), uFlags);
Icon icon = null;
if (iTotal > 0)
{
icon = Icon.FromHandle(shfi.hIcon).Clone() as Icon;
imageIndex = shfi.iIcon.ToInt64();
}
DestroyIcon(shfi.hIcon); //释放资源
return(icon);
}
/// <summary>
/// 获取磁盘驱动器图标
/// </summary>
/// <param name="driverName">有效的磁盘标号，如C、D、I等等，不区分大小写</param>
/// <param name="isSmallIcon">标识是获取小图标还是获取大图标</param>
/// <returns>返回一个Icon类型的磁盘驱动器图标对象</returns>
public static Icon GetDriverIcon(string driverName, bool isSmallIcon)
{
long imageIndex = ErrorDriverIndex;
SHFileInfo shfi = new SHFileInfo();
SHFileInfoFlags uFlags = SHFileInfoFlags.Icon | SHFileInfoFlags.ShellIconSize | SHFileInfoFlags.UseFileAttributes;
if (isSmallIcon)
{
uFlags |= SHFileInfoFlags.SmallIcon;
}
else
{
uFlags |= SHFileInfoFlags.LargeIcon;
}
int iTotal = (int)SHGetFileInfo(driverName, FileAttribute.Normal, ref shfi, (uint)Marshal.SizeOf(shfi), uFlags);
//int iTotal = (int)SHGetFileInfo(driverName, 0, ref shfi, (uint)Marshal.SizeOf(shfi), uFlags);
Icon icon = null;
if (iTotal > 0)
{
icon = Icon.FromHandle(shfi.hIcon).Clone() as Icon;
imageIndex = shfi.iIcon.ToInt64();
}
DestroyIcon(shfi.hIcon); //释放资源
return(icon);
}
/// <summary>
/// 获取系统文件图标
/// </summary>
/// <param name="fileName">文件类型的扩展名或文件的绝对路径,如果是一个exe可执行文件，请提供完整的文件名（包含路径信息）</param>
/// <param name="isSmallIcon">是否返回小图标</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>返回一个Icon类型的文件图标对象</returns>
public static Icon GetFileIcon(string fileName, bool isSmallIcon, out long imageIndex)
{
imageIndex = ErrorFileIndex;
if (String.IsNullOrEmpty(fileName))
{
return(null);
}
SHFileInfo shfi = new SHFileInfo();
SHFileInfoFlags uFlags = SHFileInfoFlags.Icon | SHFileInfoFlags.ShellIconSize;
if (isSmallIcon)
{
uFlags |= SHFileInfoFlags.SmallIcon;
}
else
{
uFlags |= SHFileInfoFlags.LargeIcon;
}
FileInfo fi = new FileInfo(fileName);
if (fi.Name.ToUpper().EndsWith(".EXE"))
{
uFlags |= SHFileInfoFlags.ExeType;
}
else
{
uFlags |= SHFileInfoFlags.UseFileAttributes;
}
int iTotal = (int)SHGetFileInfo(fileName, FileAttribute.Normal, ref shfi, (uint)Marshal.SizeOf(shfi),
uFlags);
//或int iTotal = (int)SHGetFileInfo(fileName, 0, ref shfi, (uint)Marshal.SizeOf(shfi), uFlags);
Icon icon = null;
if (iTotal > 0)
{
icon = Icon.FromHandle(shfi.hIcon).Clone() as Icon;
imageIndex = shfi.iIcon.ToInt64();
}
DestroyIcon(shfi.hIcon); //释放资源
return(icon);
}
/// <summary>
/// 获取系统文件图标
/// </summary>
/// <param name="fileName">文件类型的扩展名或文件的绝对路径,如果是一个exe可执行文件，请提供完整的文件名（包含路径信息）</param>
/// <param name="isSmallIcon">是否返回小图标</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>返回一个Icon类型的文件图标对象</returns>
public static Icon GetFileIcon(string fileName, bool isSmallIcon, out long imageIndex)
{
imageIndex = ErrorFileIndex;
if (String.IsNullOrEmpty(fileName))
{
return(null);
}
if (fileName.IndexOf('.') < 0)
{
fileName = '.' + fileName;
}
SHFileInfoFlags uFlags = SHFileInfoFlags.Icon | SHFileInfoFlags.ShellIconSize;
if (isSmallIcon)
{
uFlags |= SHFileInfoFlags.SmallIcon;
}
else
{
uFlags |= SHFileInfoFlags.LargeIcon;
}
FileInfo fi = new FileInfo(fileName);
if (fi.Name.ToUpper().EndsWith(".EXE"))
{
uFlags |= SHFileInfoFlags.ExeType;
}
else
{
uFlags |= SHFileInfoFlags.UseFileAttributes;
}
Icon icon = GetIcon(fileName, FileAttribute.Normal, uFlags, out imageIndex);
if (imageIndex == ErrorFileIndex)
{
//是否是exe文件
if (fi.Name.ToUpper().EndsWith(".EXE"))
{
imageIndex = ErrorApplicationIndex;
}
}
return(icon);
}
/// <summary>
/// 获取文件类型
/// </summary>
/// <param name="path">文件名</param>
/// <param name="dwAttr">文件信息</param>
/// <param name="dwFlag">信息控制字</param>
/// <returns></returns>
private static string GetTypeName(string path, FileAttribute dwAttr, SHFileInfoFlags dwFlag)
{
try
{
SHFileInfo fi = new SHFileInfo();
int iTotal = (int)SHGetFileInfo(path, dwAttr, ref fi, 0, dwFlag);
if (iTotal > 0)
{
return(fi.szTypeName);
}
else
{
return("");
}
}
catch
{
return("");
}
}
/// <summary>
/// 获取系统文件夹默认图标
/// </summary>
/// <param name="folderName">文件夹名称,如果想获取自定义文件夹图标，请指定完整的文件夹名称（如 F:\test)</param>
/// <param name="isSmallIcon">是否返回小图标</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>返回一个Icon类型的文件夹图标对象</returns>
public static Icon GetFolderIcon(string folderName, bool isSmallIcon, out long imageIndex)
{
imageIndex = ErrorFolderIndex;
if (String.IsNullOrEmpty(folderName))
{
return(null);
}
SHFileInfoFlags uFlags = SHFileInfoFlags.Icon | SHFileInfoFlags.ShellIconSize | SHFileInfoFlags.UseFileAttributes;
if (isSmallIcon)
{
uFlags |= SHFileInfoFlags.SmallIcon;
}
else
{
uFlags |= SHFileInfoFlags.LargeIcon;
}
return(GetIcon(folderName, FileAttribute.Directory, uFlags, out imageIndex));
}
/// <summary>
/// 获取系统图标,不要试图释放由该方法返回的图标对象，因为它指向一个公共句柄
/// </summary>
/// <param name="path">文件名或路径名</param>
/// <param name="dwAttr">文件信息</param>
/// <param name="dwFlag">信息控制字</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>获取到的Icon对象</returns>
private static Icon GetIcon(string path, FileAttribute dwAttr, SHFileInfoFlags dwFlag, out long imageIndex)
{
if (dwAttr == FileAttribute.Directory)
{
imageIndex = ErrorFolderIndex;
}
else
{
imageIndex = ErrorFileIndex;
}
SHFileInfo shfi = new SHFileInfo();
int iTotal = (int)SHGetFileInfo(path, dwAttr, ref shfi, (uint)Marshal.SizeOf(shfi), dwFlag);
//int iTotal = (int)SHGetFileInfo(path, 0, ref shfi, (uint)Marshal.SizeOf(shfi), dwFlag);
Icon icon = null;
if (iTotal > 0)
{
icon = Icon.FromHandle(shfi.hIcon).Clone() as Icon;
imageIndex = shfi.iIcon.ToInt64();
}
DestroyIcon(shfi.hIcon); //释放资源
return(icon);
}
private static extern IntPtr SHGetFileInfo(string pszPath, FileAttribute dwFileAttributes, ref SHFileInfo sfi,
uint cbFileInfo, SHFileInfoFlags uFlags);
private static extern IntPtr SHGetFileInfo(string pszPath, FileAttribute dwFileAttributes, ref SHFileInfo sfi, uint cbFileInfo, SHFileInfoFlags uFlags);
/// <summary>
/// 获取文件类型
/// </summary>
/// <param name="path">文件名</param>
/// <param name="dwAttr">文件信息</param>
/// <param name="dwFlag">信息控制字</param>
/// <returns></returns>
private static string GetTypeName(string path, FileAttribute dwAttr, SHFileInfoFlags dwFlag)
{
try
{
SHFileInfo fi = new SHFileInfo();
int iTotal = (int)SHGetFileInfo(path, dwAttr, ref fi, 0, dwFlag);
if (iTotal > 0)
{
return fi.szTypeName;
}
else
{
return "";
}
}
catch
{
return "";
}
}
/// <summary>
/// 获取系统图标,不要试图释放由该方法返回的图标对象，因为它指向一个公共句柄
/// </summary>
/// <param name="path">文件名或路径名</param>
/// <param name="dwAttr">文件信息</param>
/// <param name="dwFlag">信息控制字</param>
/// <param name="imageIndex">输出与返回图标对应的系统图标索引号</param>
/// <returns>获取到的Icon对象</returns>
private static Icon GetIcon(string path, FileAttribute dwAttr, SHFileInfoFlags dwFlag, out long imageIndex)
{
if (dwAttr == FileAttribute.Directory)
{
imageIndex = ErrorFolderIndex;
}
else
{
imageIndex = ErrorFileIndex;
}
SHFileInfo shfi = new SHFileInfo();
int iTotal = (int)SHGetFileInfo(path, dwAttr, ref shfi, (uint)Marshal.SizeOf(shfi), dwFlag);
//int iTotal = (int)SHGetFileInfo(path, 0, ref shfi, (uint)Marshal.SizeOf(shfi), dwFlag);
Icon icon = null;
if (iTotal > 0)
{
icon = Icon.FromHandle(shfi.hIcon).Clone() as Icon;
imageIndex = shfi.iIcon.ToInt64();
}
DestroyIcon(shfi.hIcon); //释放资源
return icon;
}
public static extern IntPtr SHGetFileInfo(
string pszPath,
[MarshalAs(UnmanagedType.U4)] FileAttributes dwFileAttributes,
ref SHFileInfo psfi,
int cbFileInfo,
[MarshalAs(UnmanagedType.U4)] SHFileInfoFlags uFlags);
