private static bool DeleteDirectoryTree(ref Win32.WIN32_FIND_DATA fd, string dir, StringBuilder sb)
{
IntPtr hFind = NativeMethods.FindFirstFile(Path.Combine(dir, "*"), out fd);
if (hFind == NativeMethods.INVALID_HANDLE_VALUE)
{
return(false);
}
do
{
if (fd.cFileName == "." || fd.cFileName == "..")
{
continue; //pseudo-directory
}
string path = Path.Combine(dir, fd.cFileName);
if ((fd.dwFileAttributes & FileAttributes.ReadOnly) != 0)
{
NativeMethods.SetFileAttributes(path, fd.dwFileAttributes & ~FileAttributes.ReadOnly);
}
if ((fd.dwFileAttributes & FileAttributes.Directory) != 0)
{
DeleteDirectoryTree(ref fd, path, sb);
NativeMethods.RemoveDirectory(path);
continue;
}
if (!NativeMethods.DeleteFile(path) && sb != null)
{
sb.AppendFormat("{0} : {1}\r\n", path, Win32Exception.GetLastErrorMessage());
}
} while (NativeMethods.FindNextFile(hFind, out fd));
NativeMethods.FindClose(hFind);
return(NativeMethods.RemoveDirectory(dir));
}
/// <summary>
/// Delete entire directory tree including all files. Even read-only ones.
/// NO exceptions will be thrown.
/// </summary>
/// <param name="dir">Directory tree to be deleted.</param>
/// <param name="sb">Optional. Contains a list of files (with error msg) that could not be deleted.</param>
/// <returns>True if successful, if false, 'sb' contains the files that could not be deleted.</returns>
public static bool DeleteDirectoryTree(string dir, StringBuilder sb = null)
{
if (string.IsNullOrWhiteSpace(dir))
{
if (sb != null)
{
sb.AppendFormat("Directory \"{0}\" not found.", dir ?? "null");
}
return(false);
}
if (!Directory.Exists(dir))
{
if (sb != null)
{
sb.AppendFormat("Directory \"{0}\" not found.", dir);
}
return(false);
}
Win32.WIN32_FIND_DATA fd = new Win32.WIN32_FIND_DATA(); //pass as ref (aka ptr) to avoid filling up the stack
return(DeleteDirectoryTree(ref fd, dir, sb));
}
