c#中如何获取本机用户名、MAC地址、IP地址、硬盘ID、CPU序列号、系统名称、物理内存

我们在利用C#开发桌面程序（Winform）程序的时候，

经常需要获取一些跟系统相关的信息，

以下这些代码获取能有些用处。

c#中如何获取本机用户名、MAC地址、IP地址、硬盘ID、CPU序列号、系统名称、物理内存。

首先需要引入命名空间：

using System.Management;

/// 操作系统的登录用户名：

string GetUserName()
{
    try
    {
        string st = "";
        ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
        ManagementObjectCollection moc = mc.GetInstances();
        foreach (ManagementObject mo in moc)
        {
			 st = mo["UserName"].ToString();
        }
        moc = null;
        mc = null;
        return st;
    }
    catch
    {
        return "unknow";
    }
    finally
	{
 
    }
 }

//获取MAC地址：

string GetMacAddress()
{
    try
    {
        //获取网卡硬件地址
        string mac = "";
        ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
        ManagementObjectCollection moc = mc.GetInstances();
        foreach (ManagementObject mo in moc)
        {
            if ((bool)mo["IPEnabled"] == true)
            {
                mac = mo["MacAddress"].ToString();
                break;
            }
        }
        moc = null;
        mc = null;
        return mac;
    }
    catch
    {
        return "unknow";
    }
    finally
    {
 
    }
}

//获取IP地址：

        /// <summary>
        /// 获取客户端内网IP地址
        /// </summary>
        /// <returns></returns>
        private static string getClientLocalIPAddress()
        {
            string localIP=null;
            try
            {
                IPHostEntry ipHost = System.Net.Dns.GetHostEntry(Dns.GetHostName());// Dns.Resolve(Dns.GetHostName()); ;
                IPAddress ipaddress = ipHost.AddressList[0];
                localIP = ipaddress.ToString();
                return "内网IP地址："+localIP;
            }
            catch
            {
                return "内网IP地址：unknown";
            }
            finally
            { 
 
            }
        }
 
        /// <summary>
        /// 获得客户端外网IP地址
        /// </summary>
        /// <returns>IP地址</returns>
        public static string getClientInternetIPAddress()
        {
            string internetAddress = "";
            try
            {
                using (WebClient webClient = new WebClient())
                {
                    internetAddress = webClient.DownloadString("http://www.coridc.com/ip");//从外部网页获得IP地址
                    //判断IP是否合法
                    if (!System.Text.RegularExpressions.Regex.IsMatch(internetAddress, "[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}"))
                    {
                        internetAddress = webClient.DownloadString("http://fw.qq.com/ipaddress");//从腾讯提供的API中获得IP地址
                    }
                }
                return "外网IP地址：" + internetAddress;
            }
            catch
            {
                return "外网IP地址：unknown";
            }
            finally
            {
 
            }
        }

//获取硬盘ID：

string GetDiskID()
{
    try
    {
        String HDid = "";
        ManagementClass mc = new ManagementClass("Win32_DiskDrive");
        ManagementObjectCollection moc = mc.GetInstances();
        foreach (ManagementObject mo in moc)
        {
            //HDid = (string)mo.Properties["Model"].ToString();
            HDid = (String)mo.Properties["Model"].Value.ToString();
        }
        moc = null;
        mc = null;
        return HDid;
    }
    catch
    {
        return "unknow";
    }
    finally
    {
 
    }
}

//获取CPUid：

string GetCpuID()
{
    try
    {
        //获取CPU序列号代码
        string cpuInfo = "";//cpu序列号
        ManagementClass mc = new ManagementClass("Win32_Processor");
        ManagementObjectCollection moc = mc.GetInstances();
        foreach (ManagementObject mo in moc)
        {
            cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
        }
        moc = null;
        mc = null;
        return cpuInfo;
    }
    catch
    {
        return "unknow";
    }
    finally
    {
 
    }
}

//系统名称：

string GetSystemType()
{
    try
    {
        string st = "";
        ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
        ManagementObjectCollection moc = mc.GetInstances();
        foreach (ManagementObject mo in moc)
        {
            st = mo["SystemType"].ToString();
        }
        moc = null;
        mc = null;
        return st;
    }
    catch
    {
        return "unknow";
    }
    finally
    {
 
    }
}

//获取物理内存：

string GetTotalPhysicalMemory()
{
    try
    {
        string st = "";
        ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
        ManagementObjectCollection moc = mc.GetInstances();
        foreach (ManagementObject mo in moc)
        {
            st = mo["TotalPhysicalMemory"].ToString();
        }
        moc = null;
        mc = null;
        return st;
    }
    catch
    {
        return "unknow";
    }
    finally
    {
 
    }
}