/// <summary>
/// �˷������ڻ��һ���ļ����͵�����
/// </summary>
/// <param name="path">�ļ���·��</param>
/// <returns></returns>
public static string GetFileTypeName(string filePath)
{
if (!File.Exists(filePath))
{
throw new FileNotFoundException(filePath);
}
try
{
SHFILEINFO fileInfo = new SHFILEINFO();
int cbFileInfo = Marshal.SizeOf(fileInfo);
uint dwflag = (uint)(FileInfoFlags.SHGFI_TYPENAME | FileInfoFlags.SHGFI_USEFILEATTRIBUTES);
uint dwAttr = (uint)FileAttributeFlags.FILE_ATTRIBUTE_NORMAL;
IntPtr hr = ManagedSHGetFileInfo.SHGetFileInfo(filePath, dwAttr, ref fileInfo,
(uint)Marshal.SizeOf(fileInfo), dwflag);
return fileInfo.szTypeName;
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// ���һ��Ӧ�ó�����ʾ�����ƣ����硰�ҵĵ��ԡ���������վ���ȵ�
/// </summary>
public static void FetchProcDisplayName()
{
IntPtr pidl1 = IntPtr.Zero;
int result = SHGetFolderLocation(IntPtr.Zero,
(int)CSIDLFlags.CSIDL_BITBUCKET,
IntPtr.Zero,
0,
out pidl1);
if (result == S_OK)
{
SHFILEINFO fileInfo = new SHFILEINFO();
string filePath = Marshal.PtrToStringAuto(pidl1); //�����ָ��CSIDL��·��
ManagedSHGetFileInfo.SHGetFileInfo(filePath,
0,
ref fileInfo,
(uint)Marshal.SizeOf(fileInfo),
(uint)(FileInfoFlags.SHGFI_PIDL |
FileInfoFlags.SHGFI_DISPLAYNAME));
Console.WriteLine(fileInfo.szDisplayName);
}
// �ͷ�pidl1
ILFree(pidl1);
}
/// <summary>
/// ����ļ���ͼ��
/// </summary>
/// <param name="filePath">�ļ���·��</param>
/// <param name="linkOverlay">�Ƿ���ʾͼ���ϵĿ�ݷ�ʽС��ͷ</param>
/// <param name="iconSize">Ҫ��ʾ��ͼ���С</param>
/// <returns></returns>
public static Icon GetFileIcon(string filePath, bool linkOverlay, IconSize iconSize)
{
if (!File.Exists(filePath))
{
throw new FileNotFoundException(filePath);
}
SHFILEINFO fileInfo = new SHFILEINFO();
uint dwflags = (uint)(FileInfoFlags.SHGFI_ICON | FileInfoFlags.SHGFI_USEFILEATTRIBUTES);
if (linkOverlay)
{
dwflags += (uint)FileInfoFlags.SHGFI_LINKOVERLAY;
}
if (iconSize == IconSize.Small)
{
dwflags += (uint)FileInfoFlags.SHGFI_SMALLICON;
}
else if (iconSize == IconSize.Large)
{
dwflags += (uint)FileInfoFlags.SHGFI_LARGEICON;
}
ManagedSHGetFileInfo.SHGetFileInfo(filePath,
(uint)FileAttributeFlags.FILE_ATTRIBUTE_NORMAL,
ref fileInfo,
(uint)Marshal.SizeOf(fileInfo),
dwflags);
// ��Win32 API�������ص�ͼ�꿽�����й�Icon������
Icon icon = (Icon)Icon.FromHandle(fileInfo.hIcon).Clone();
// ʹ��Win32 API�����ͷŵ����ͼ��
DestroyIcon(fileInfo.hIcon);
return icon;
}
public static extern IntPtr SHGetFileInfo(
string pszPath,
uint dwFileAttributes,
ref SHFILEINFO psfi,
uint cbFileInfo,
uint uFlags);
