RPC服務器不可用時如何通過？

Question

這是我的代碼。 我試圖在網絡上獲取計算機信息，我有兩種方法可以獲取它們。 但是當機器不在線時，我收到了這個錯誤。 當它們不在線時，我如何通過這些機器。

public string GetBoardSerNo(string machineName)
    {
        string y = "";

        try
        {
            ManagementObjectSearcher searcher = new
                ManagementObjectSearcher("\\\\" + machineName + "\\root\\CIMV2", "SELECT * FROM Win32_BaseBoard");

            foreach (ManagementObject wmi in searcher.Get())
            {

                return wmi.GetPropertyValue("SerialNumber").ToString();


            }
        }
        finally
        {
            y = "Serial Number: Unknown";

        }

        return y;

    }
    public string GetModel(string machineName)
    {
        string x = "";

        try
        {

            ManagementObjectSearcher searcher = new
                ManagementObjectSearcher("\\\\" + machineName + "\\root\\CIMV2", "SELECT * FROM Win32_ComputerSystem");

            foreach (ManagementObject wmi in searcher.Get())
            {
                return wmi.GetPropertyValue("Model").ToString();

            }

        }
        finally
        {
            x = "Model No: Unknown";

        }
        return x;

    }

Answer 1

我自己解決了。 謝謝你的幫助。

    {

        try
        {
            ManagementObjectSearcher searcher = new
                ManagementObjectSearcher("\\\\" + machineName + "\\root\\CIMV2", "SELECT * FROM Win32_BaseBoard");

            foreach (ManagementObject wmi in searcher.Get())
            {

                return wmi.GetPropertyValue("SerialNumber").ToString();


            }
        }
        catch (COMException ce)
        {
            if ((uint)ce.ErrorCode == 0x800706BA)
            {
                return "Serial Number : Null";
            }
        }

        return "Serial Number : Null";


    }