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，例如用户名、MAC地址、IP地址、硬盘ID、CPU序列号、系统名称、物理内存等。
首先需要引入命名空间：
using System.Management;
/// 获取本机用户名、MAC地址、内网IP地址、公网IP地址、硬盘ID、CPU序列号、系统名称、物理内存。
/// </summary>
public class GetSystemInfo
{
/// <summary>
/// 操作系统的登录用户名
/// </summary>
/// <returns>系统的登录用户名</returns>
public static string GetUserName()
{
try
{
string strUserName = string.Empty;
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
strUserName = mo["UserName"].ToString();
}
moc = null;
mc = null;
return strUserName;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取本机MAC地址
/// </summary>
/// <returns>本机MAC地址</returns>
public static string GetMacAddress()
{
try
{
string strMac = string.Empty;
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
if ((bool)mo["IPEnabled"] == true)
{
strMac = mo["MacAddress"].ToString();
}
}
moc = null;
mc = null;
return strMac;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取本机的物理地址
/// </summary>
/// <returns></returns>
public static string getMacAddr_Local()
{
string madAddr = null;
try
{
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc2 = mc.GetInstances();
foreach (ManagementObject mo in moc2)
{
if (Convert.ToBoolean(mo["IPEnabled"]) == true)
{
madAddr = mo["MacAddress"].ToString();
madAddr = madAddr.Replace(':', '-');
}
mo.Dispose();
}
if (madAddr == null)
{
return "unknown";
}
else
{
return madAddr;
}
}
catch (Exception)
{
return "unknown";
}
}
/// <summary>
/// 获取客户端内网IPv6地址
/// </summary>
/// <returns>客户端内网IPv6地址</returns>
public static string GetClientLocalIPv6Address()
{
string strLocalIP = string.Empty;
try
{
IPHostEntry ipHost = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddress = ipHost.AddressList[0];
strLocalIP = ipAddress.ToString();
return strLocalIP;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取客户端内网IPv4地址
/// </summary>
/// <returns>客户端内网IPv4地址</returns>
public static string GetClientLocalIPv4Address()
{
string strLocalIP = string.Empty;
try
{
IPHostEntry ipHost = Dns.Resolve(Dns.GetHostName());
IPAddress ipAddress = ipHost.AddressList[0];
strLocalIP = ipAddress.ToString();
return strLocalIP;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取客户端内网IPv4地址集合
/// </summary>
/// <returns>返回客户端内网IPv4地址集合</returns>
public static List<string> GetClientLocalIPv4AddressList()
{
List<string> ipAddressList = new List<string>();
try
{
IPHostEntry ipHost = Dns.Resolve(Dns.GetHostName());
foreach (IPAddress ipAddress in ipHost.AddressList)
{
if (!ipAddressList.Contains(ipAddress.ToString()))
{
ipAddressList.Add(ipAddress.ToString());
}
}
}
catch
{
}
return ipAddressList;
}
/// <summary>
/// 获取客户端外网IP地址
/// </summary>
/// <returns>客户端外网IP地址</returns>
public static string GetClientInternetIPAddress()
{
string strInternetIPAddress = string.Empty;
try
{
using (WebClient webClient = new WebClient())
{
strInternetIPAddress = webClient.DownloadString("http://www.coridc.com/ip");
Regex r = new Regex("[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}");
Match mth = r.Match(strInternetIPAddress);
if (!mth.Success)
{
strInternetIPAddress = GetClientInternetIPAddress2();
mth = r.Match(strInternetIPAddress);
if (!mth.Success)
{
strInternetIPAddress = "unknown";
}
}
return strInternetIPAddress;
}
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取本机公网IP地址
/// </summary>
/// <returns>本机公网IP地址</returns>
private static string GetClientInternetIPAddress2()
{
string tempip = "";
try
{
//http://iframe.ip138.com/ic.asp 返回的是：您的IP是：[220.231.17.99] 来自：北京市 光环新网
WebRequest wr = WebRequest.Create("http://iframe.ip138.com/ic.asp");
Stream s = wr.GetResponse().GetResponseStream();
StreamReader sr = new StreamReader(s, Encoding.Default);
string all = sr.ReadToEnd(); //读取网站的数据
int start = all.IndexOf("[") + 1;
int end = all.IndexOf("]", start);
tempip = all.Substring(start, end - start);
sr.Close();
s.Close();
return tempip;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取硬盘序号
/// </summary>
/// <returns>硬盘序号</returns>
public static string GetDiskID()
{
try
{
string strDiskID = string.Empty;
ManagementClass mc = new ManagementClass("Win32_DiskDrive");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
strDiskID = mo.Properties["Model"].Value.ToString();
}
moc = null;
mc = null;
return strDiskID;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取CpuID
/// </summary>
/// <returns>CpuID</returns>
public static string GetCpuID()
{
try
{
string strCpuID = string.Empty;
ManagementClass mc = new ManagementClass("Win32_Processor");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
strCpuID = mo.Properties["ProcessorId"].Value.ToString();
}
moc = null;
mc = null;
return strCpuID;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取操作系统类型
/// </summary>
/// <returns>操作系统类型</returns>
public static string GetSystemType()
{
try
{
string strSystemType = string.Empty;
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
strSystemType = mo["SystemType"].ToString();
}
moc = null;
mc = null;
return strSystemType;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取操作系统名称
/// </summary>
/// <returns>操作系统名称</returns>
public static string GetSystemName()
{
try
{
string strSystemName = string.Empty;
ManagementObjectSearcher mos = new ManagementObjectSearcher("root\\CIMV2", "SELECT PartComponent FROM Win32_SystemOperatingSystem");
foreach (ManagementObject mo in mos.Get())
{
strSystemName = mo["PartComponent"].ToString();
}
mos = new ManagementObjectSearcher("root\\CIMV2", "SELECT Caption FROM Win32_OperatingSystem");
foreach (ManagementObject mo in mos.Get())
{
strSystemName = mo["Caption"].ToString();
}
return strSystemName;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取物理内存信息
/// </summary>
/// <returns>物理内存信息</returns>
public static string GetTotalPhysicalMemory()
{
try
{
string strTotalPhysicalMemory = string.Empty;
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
strTotalPhysicalMemory = mo["TotalPhysicalMemory"].ToString();
}
moc = null;
mc = null;
return strTotalPhysicalMemory;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取主板id
/// </summary>
/// <returns></returns>
public static string GetMotherBoardID()
{
try
{
ManagementClass mc = new ManagementClass("Win32_BaseBoard");
ManagementObjectCollection moc = mc.GetInstances();
string strID = null;
foreach (ManagementObject mo in moc)
{
strID = mo.Properties["SerialNumber"].Value.ToString();
break;
}
return strID;
}
catch
{
return "unknown";
}
}
/// <summary>
/// 获取公用桌面路径