远程控制_____关机,重启问题

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Management;namespace Wind
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            Todo(h.Text, m.Text, z.Text, "Reboot");
        }        private void Todo(string name,string pass,string ip,string fo)
        {
            ConnectionOptions op = new ConnectionOptions();
            op.Username = name;
            op.Password = pass;
            ManagementScope scope = new ManagementScope("\\\\"+ip+"\\root\\cimv2:Win32_Service",op);
            try
            {
                scope.Connect();
                System.Management.ObjectQuery oq = new ObjectQuery("SELECT * FROM Win32_OperatingSystem");
                ManagementObjectSearcher qu = new ManagementObjectSearcher(scope,oq);
                ManagementObjectCollection c = qu.Get();
                foreach (ManagementObject mo in c)
                {
                    string[] str ={ "" };
                    mo.InvokeMethod(fo, str);
                }
                MessageBox.Show("成功");
            }
            catch (Exception e)
            {
                MessageBox.Show("失败");
            }
        }        private void guan_Click(object sender, EventArgs e)
        {
            Todo(h.Text, m.Text, z.Text, "Shutdown");
        }        private void button3_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }        private void Form1_Load(object sender, EventArgs e)
        {
           
        }
    }
}
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为啥局域网好用,internet不好用那(ip,帐号,密码都正确)!!
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