private static long CalculateFolderSize(string path, out int files, out int folders)
{
files = 0;
folders = 0;
IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
long size = 0;
FindData findData = new FindData();
IntPtr findHandle;
findHandle = path.StartsWith("\\\\")
? Kernel32.FindFirstFile(path + @"\*", findData)
: Kernel32.FindFirstFile(@"\\?\" + path + @"\*", findData);
if (findHandle != INVALID_HANDLE_VALUE)
{
do
{
if ((findData.fileAttributes & (int)FileAttributes.Directory) != 0)
{
if (findData.fileName != "." && findData.fileName != "..")
{
folders++;
int subfiles, subfolders;
string subdirectory = path + (path.EndsWith(@"\") ? "" : @"\") +
findData.fileName;
size += CalculateFolderSize(subdirectory, out subfiles, out subfolders);
folders += subfolders;
files += subfiles;
}
}
else
{
// File
files++;
size += (long)findData.nFileSizeLow + (long)findData.nFileSizeHigh * 4294967296;
}
}while (Kernel32.FindNextFile(findHandle, findData));
Kernel32.FindClose(findHandle);
}
return(size);
}
public static extern bool FindNextFile(IntPtr hFindFile, [In, Out] FindData lpFindFileData);
public static extern IntPtr FindFirstFile(String fileName, [In, Out] FindData findFileData);