Sony Vegas 托管的 CLR 似乎不支持 NamedPipeClientStream。我通过使用 Windows 中的消息系统实现了相同的行为。这是我在 Sony Vegas Script 中使用的代码
public static class SonyVegasWindowMessageHelper
{
    private const int WM_USER = 0x400;
    private const int WM_COPYDATA = 0x4A;
    private const int VIDEO_RENDERED = 52;
    [DllImport("user32.dll")]
    private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
    [DllImport("user32.dll", SetLastError = true)]
    private static extern bool SendMessage(IntPtr hWnd, uint msg, IntPtr wParam, ref COPYDATASTRUCT lParam);
    public static void SendMessage(string message)
    {
        IntPtr window = FindWindow(null, "Youtube Video Uploader");
        if (window != IntPtr.Zero)
        {
            byte[] data = Encoding.Default.GetBytes(message);
            COPYDATASTRUCT str = new COPYDATASTRUCT();
            str.CbData = data.Length + 1;
            str.DwData = (IntPtr)VIDEO_RENDERED;
            str.LpData = message;
            SendMessage(window, WM_COPYDATA, IntPtr.Zero, ref str);
        }
    }
    private struct COPYDATASTRUCT
    {
        public IntPtr DwData;
        public int CbData;
        [MarshalAs(UnmanagedType.LPStr)]
        public string LpData;
    }
}
使用 SendMessage,您可以将任何您想要的消息发送到其他应用程序。