static extern bool ConnectNamedPipe(IntPtr hNamedPipe,

static extern bool ConnectNamedPipe(IntPtr hNamedPipe, IntPtr lpOverlapped);

Good example of named pipes using ConnectNamedPipe() can be found at http://wyday.com/blog/2010/multi-process-c-sharp-application-like-google-chrome-using-named-pipes/

    private static extern bool DisconnectNamedPipe(

    private static extern bool ConnectNamedPipe(

        DisconnectNamedPipe(_handle);

        if (ConnectNamedPipe(_handle, IntPtr.Zero) != true)

        DisconnectNamedPipe(_handle);

        if (ConnectNamedPipe(_handle, IntPtr.Zero) == false)

static extern bool DisconnectNamedPipe(IntPtr hNamedPipe);