顯示編輯器的行數

參考   http://msdn.microsoft.com/zh-tw/library/ms165340.aspx

1. 在 [工具] 功能表中選取 [選項]。
2. 在 [文字編輯器] 資料夾中，選擇 [所有語言] 子資料夾內之 [一般] 選項，將此選項設定為全域性。
   -或-
   在您用來進 行程式設計的語言子資料夾內選擇 [一般] 選項。
3. 在 [ 顯示] 下，選取 [ 行號]。

獲得mac address

using System;
using System.Management;

class App
{
  static string GetMAC()
  {
 using (ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration"))
 {
   ManagementObjectCollection moc = mc.GetInstances();
   foreach (ManagementObject mo in moc)
   {                
     if ((bool)mo["IPEnabled"])
       return mo["MacAddress"].ToString();
   }
 }
   return null;
  }

  public static void Main()
  {
 SelectQuery query = new SelectQuery("Win32_ComputerSystem");
 ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
 foreach (ManagementObject mo in searcher.Get())
 { 
   Console.WriteLine("Mac Address : {0} ", GetMAC());
 }
 Console.ReadKey();
  }
}

修改電腦工作群組

using System;
using System.Management;
class program
{
  public static void Main()
  {
    string WorkgroupName = "ECLASS";
    ManagementObject manage = new ManagementObject(string.Format("Win32_ComputerSystem.Name='{0}'", Environment.MachineName));
    object[] args = { WorkgroupName, null, null, null };
    manage.InvokeMethod("JoinDomainOrWorkgroup", args);
    Console.WriteLine("Done! The Workgroup name will take effect after the next computer restart.");
    Console.ReadKey();
  }
}

修改電腦名稱

using System;
using System.Runtime.InteropServices;
class Program
{
    enum _COMPUTER_NAME_FORMAT
    {
        ComputerNameNetBIOS,
        ComputerNameDnsHostname,
        ComputerNameDnsDomain,
        ComputerNameDnsFullyQualified,
        ComputerNamePhysicalNetBIOS,
        ComputerNamePhysicalDnsHostname,
        ComputerNamePhysicalDnsDomain,
        ComputerNamePhysicalDnsFullyQualified,
        ComputerNameMax
    };
    //_COMPUTER_NAME_FORMAT COMPUTER_NAME_FORMAT;

    [DllImport("kernel32.dll")]
    static extern bool SetComputerName(string lpComputerName);

    [DllImport("kernel32.dll")]
    static extern bool SetComputerNameEx(_COMPUTER_NAME_FORMAT iType, string lpComputerName);

    public static void Main()
    {
        string MachineName = "winxp-vm";
        bool succeeded = SetComputerName(MachineName);
        bool succeeded2 = SetComputerNameEx(_COMPUTER_NAME_FORMAT.ComputerNamePhysicalDnsHostname, MachineName);

        if (succeeded && succeeded2){
            Console.WriteLine("Done! The name will take effect after the next computer restart.");
        }
        else
        {
            Console.WriteLine("Error!");
        }
        Console.ReadKey();
    }
}