使用ManagementClass安装打印机在C＃中给出了一个未识别的错误

Question

我是C＃的新手。

我正在尝试使用this post I found以编程方式安装打印机，但我在此处获得例外：

inputParam.SetPropertyValue("Print", "\\\\http://ip.of.my.server");

在System.Management.dll中找到了“System.Management.ManagementException”类型的异常。

其他信息：未找到。

以下是代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Management;

namespace Printer
{
    class Installation
    {


        static public string addprinter()
        {
            ManagementClass win32Printer = new ManagementClass("Win32_Printer");
            ManagementBaseObject inputParam = win32Printer.GetMethodParameters("AddPrinterConnection");
                inputParam.SetPropertyValue("Print", "\\\\http://ip.of.my.server");

            ManagementBaseObject result = (ManagementBaseObject)win32Printer.InvokeMethod("AddPrinterConnection", inputParam, null);
            uint errorCode = (uint)result.Properties["returnValue"].Value;
            switch (errorCode)
            {
                case 0:
                    return ("Successfully connected printer.");

                case 5:
                    return ("Access Denied.");

                case 123:
                    return ("The filename, directory name, or volume label syntax is incorrect.");

                case 1801:
                    return ("Invalid Printer Name.");

                case 1930:
                    return ("Incompatible Printer Driver.");

                case 3019:
                   return("The specified printer driver was not found on the system and needs to be downloaded.");

            }
            return ("Unkown error.");
        }
    }
}

这是调用代码的表单，虽然我不认为问题存在：

private void Send_Click(object sender, EventArgs e)
        {
            if (true)
            {
                MessageBox.Show(Installation.addprinter());

            }