internal static int CopyFile(String src, String dst, bool failIfExists)
{
uint copyFlags = failIfExists ? (uint)Interop.mincore.FileOperations.COPY_FILE_FAIL_IF_EXISTS : 0;
Interop.mincore.COPYFILE2_EXTENDED_PARAMETERS parameters = new Interop.mincore.COPYFILE2_EXTENDED_PARAMETERS()
{
dwSize = (uint)Marshal.SizeOf <Interop.mincore.COPYFILE2_EXTENDED_PARAMETERS>(),
dwCopyFlags = copyFlags
};
int hr = Interop.mincore.CopyFile2(src, dst, ref parameters);
return(Win32Marshal.TryMakeWin32ErrorCodeFromHR(hr));
}