如何获得本地计算机名和局域网的计算机名（有无答案都会给分）

Question

是WindowsForm程序
从网上找了一下那方法过时了，用不了
给个例子吧（有无答案都会给分）

Answer 1

本地计算机名
SystemInformation.ComputerName

Answer 2

private void button1_Click(object sender, System.EventArgs e)
{//获取系统信息
try
{
this.label1.Text="用户名："+SystemInformation.UserName;
this.label2.Text="计算机名："+SystemInformation.ComputerName;
this.label3.Text="操作系统："+Environment.OSVersion.Platform;
this.label4.Text="版本号："+Environment.OSVersion.Version;
    if(SystemInformation.BootMode.ToString()=="Normal")
this.label5.Text="启动方式：正常启动";
if(SystemInformation.BootMode.ToString()=="FailSafe")
this.label5.Text="启动方式：安全启动";
if(SystemInformation.BootMode.ToString()=="FailSafeWithNetwork")
this.label5.Text="启动方式：通过网络服务启动";
if(SystemInformation.Network==true)
                    this.label6.Text="网络连接：已连接";
else
this.label6.Text="网络连接：未连接";
this.label7.Text="显示器数量："+SystemInformation.MonitorCount.ToString();
                this.label8.Text="显示器分辨率："+SystemInformation.PrimaryMonitorMaximizedWindowSize.Width.ToString()+"X"+
SystemInformation.PrimaryMonitorMaximizedWindowSize.Height.ToString();
}
catch(Exception Err)
{
MessageBox.Show("获取系统信息发生错误！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
}

Answer 3

方法一：使用逐个IP地址扫描的方式
利用多线程来对每个IP逐个扫描。
ComputerAddressInfo cai = new ComputerAddressInfo("192.168.1",42,53); 
Thread thScan = new Thread(new ThreadStart(cai.ScanComputers)); 
thScan.Start(); 
//... 
    public class ComputerAddressInfo 
    { 
        private int startIP = 0; 
        private int endIP = 0; 
        private string ipPrefix = ""; 
        private ArrayList computerList = null;        public ComputerAddressInfo(string ipPrefix,int startIP,int endIP) 
        { 
            this.startIP = startIP; 
            this.endIP = endIP; 
            this.ipPrefix = ipPrefix; 
            computerList = new ArrayList(); 
        } 
  
        public void ScanComputers() 
        { 
            for(int i=startIP;i<=endIP;i++) 
            { 
                string scanIP = ipPrefix +"."+i.ToString(); 
                IPAddress myScanIP = IPAddress.Parse(scanIP); 
                IPHostEntry myScanHost = null; 
                string[] arr = new string[2]; 
                try 
                { 
                    myScanHost = Dns.GetHostByAddress(myScanIP); 
                } 
                catch 
                { 
                    continue; 
                } 
                if (myScanHost != null) 
                { 
                    arr[0] = myScanHost.HostName; 
                    arr[1] = scanIP; 
                    computerList.Add(arr); 
                } 
            } 
        } 
    } 方法二：使用Active Directory 
        public static ArrayList GetComputerList()  
        {  
            ArrayList list = new ArrayList(); 
            //or  use  "WinNT://your_domain_name"  
            DirectoryEntry  root  =  new  DirectoryEntry("WinNT:"); 
            DirectoryEntries  domains  =  root.Children;  
            domains.SchemaFilter.Add("domain");  
            foreach  (DirectoryEntry  domain  in  domains)  
            {    
                DirectoryEntries  computers  =  domain.Children;  
                computers.SchemaFilter.Add("computer");  
                foreach  (DirectoryEntry  computer  in  computers)  
                {  
                    object[] arr = new string[3]; 
                    IPHostEntry  iphe = null; 
                    try 
                    { 
                        iphe  =  Dns.GetHostByName(computer.Name); 
                    } 
                    catch 
                    {
                        continue; 
                    } 
                    arr[0] = domain.Name; 
                    arr[1] = computer.Name; 
                    if ( iphe != null && iphe.AddressList.Length >0 ) 
                    {
                        for ( int i=0;i 
                            arr[2] += iphe.AddressList[i].ToString()+","; 
                        arr[2] = arr[2].ToString().Remove(arr[2].ToString().Length-1,1); 
                    } 
                    else 
                        arr[2] = ""; 
                    list.Add(arr); 
                }  
            }  
            return list; 
        }  
网上找的..参考下吧