从C#使用PowerShell主机如何获得输出？

using System;
using System.Management.Automation;
using System.Management.Automation.Runspaces;

class Program
{
    static void Main()
    {
        // 创建一个运行空间配置
        RunspaceConfiguration runspaceConfig = RunspaceConfiguration.Create();
        // 创建一个PowerShell运行空间
        using (Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfig))
        {
            // 打开运行空间
            runspace.Open();

            // 创建一个PowerShell脚本
            string script = @"
                Get-Process | Select-Object ProcessName, Id, CPU, WorkingSet
            ";

            // 创建一个PowerShell对象
            using (PowerShell powershell = PowerShell.Create())
            {
                // 设置脚本
                powershell.AddScript(script);

                // 执行脚本并捕获输出
                Collection<PSObject> results = powershell.Invoke();

                // 遍历结果并打印
                foreach (PSObject result in results)
                {
                    Console.WriteLine("Process Name: " + result.Members["ProcessName"].Value);
                    Console.WriteLine("Process ID: " + result.Members["Id"].Value);
                    Console.WriteLine("CPU: " + result.Members["CPU"].Value);
                    Console.WriteLine("Working Set: " + result.Members["WorkingSet"].Value);
                    Console.WriteLine();
                }
            }
        }
    }
}