C#获取电脑系统版本、内存、硬盘大小等信息

有时需要获取电脑的相关信息。这时可以通过调用windows api的方式，进行获取。

可以通过在powershell中 通过下面的命令进行查询，然后可以通过c#调用获取需要的信息。

gwmi + windows api 

如图所示

对应的c#代码为

  /// 

        /// 获取硬盘容量
        /// 
        public string GetDiskSize()
        {
            string result = string.Empty;
            StringBuilder sb = new StringBuilder();
            try
            {
                string hdId = string.Empty;
                ManagementClass hardDisk = new ManagementClass(WindowsAPIType.win32_DiskDrive.ToString());
                ManagementObjectCollection hardDiskC = hardDisk.GetInstances();
                foreach (ManagementObject m in hardDiskC)
                {
                    long capacity = Convert.ToInt64(m[WindowsAPIKeys.Size.ToString()].ToString());
                    sb.Append(CommonUtlity.ToGB(capacity, 1000.0) + "+");
                }
                result = sb.ToString().TrimEnd('+');
            }
            catch
            {

            }
            return result;
        }

API和Keys枚举

    /// 

    /// windows api 名称
    /// 
    public enum WindowsAPIType
    {
        /// 

        /// 内存
        /// 
        Win32_PhysicalMemory,
        /// 

        /// cpu
        /// 
        Win32_Processor,
        /// 

        /// 硬盘
        /// 
        win32_DiskDrive,
        /// 

        /// 电脑型号
        /// 
        Win32_ComputerSystemProduct,
        /// 

        /// 分辨率
        /// 
        Win32_DesktopMonitor,
        /// 

        /// 显卡
        /// 
        Win32_VideoController,
        /// 

        /// 操作系统
        /// 
        Win32_OperatingSystem

    }

    public enum WindowsAPIKeys
    {
        /// 

        /// 名称
        /// 
        Name,
        /// 

        /// 显卡芯片
        /// 
        VideoProcessor,
        /// 

        /// 显存大小
        /// 
        AdapterRAM,
        /// 

        /// 分辨率宽
        /// 
        ScreenWidth,
        /// 

        /// 分辨率高
        /// 
        ScreenHeight,
        /// 

        /// 电脑型号
        /// 
        Version,
        /// 

        /// 硬盘容量
        /// 
        Size,
        /// 

        /// 内存容量
        /// 
        Capacity,
        /// 

        /// cpu核心数
        /// 
        NumberOfCores
    }

Computer类

    /// 

    /// 电脑信息类 单例
    /// 
    public class Computer
    {
        private static Computer _instance;
        private static readonly object _lock = new object();
        private Computer()
        { }
        public static Computer CreateComputer()
        {
            if (_instance == null)
            {
                lock (_lock)
                {
                    if (_instance == null)
                    {
                        _instance = new Computer();
                    }
                }
            }
            return _instance;
        }
        /// 

        /// 查找cpu的名称，主频, 核心数
        /// 
        /// 
        public Tuple GetCPU()
        {
            Tuple result = null;
            try
            {
                string str = string.Empty;
                ManagementClass mcCPU = new ManagementClass(WindowsAPIType.Win32_Processor.ToString());
                ManagementObjectCollection mocCPU = mcCPU.GetInstances();
                foreach (ManagementObject m in mocCPU)
                {
                    string name = m[WindowsAPIKeys.Name.ToString()].ToString();
                    string[] parts = name.Split('@');
                    result = new Tuple(parts[0].Split('-')[0] + "处理器", parts[1]);
                    break;
                }

            }
            catch
            {

            }
            return result;
        }


        /// 

        /// 获取cpu核心数
        /// 
        /// 
        public string GetCPU_Count()
        {
            string str = "查询失败";
            try
            {
                int coreCount = 0;
                foreach (var item in new System.Management.ManagementObjectSearcher("Select * from " +
 WindowsAPIType.Win32_Processor.ToString()).Get())
                {
                    coreCount += int.Parse(item[WindowsAPIKeys.NumberOfCores.ToString()].ToString());
                }
                if (coreCount == 2)
                {
                    return "双核";
                }
                str = coreCount.ToString() + "核";
            }
            catch
            {

            }
            return str;
        }

        /// 

        /// 获取系统内存大小
        /// 
        /// 内存大小（单位M）
        public string GetPhisicalMemory()
        {
            ManagementObjectSearcher searcher = new ManagementObjectSearcher();   //用于查询一些如系统信息的管理对象 
            searcher.Query = new SelectQuery(WindowsAPIType.Win32_PhysicalMemory.ToString(), "",
 new string[] { WindowsAPIKeys.Capacity.ToString() });//设置查询条件 
            ManagementObjectCollection collection = searcher.Get();   //获取内存容量 
            ManagementObjectCollection.ManagementObjectEnumerator em = collection.GetEnumerator();

            long capacity = 0;
            while (em.MoveNext())
            {
                ManagementbaseObject baseObj = em.Current;
                if (baseObj.Properties[WindowsAPIKeys.Capacity.ToString()].Value != null)
                {
                    try
                    {
                        capacity += long.Parse(baseObj.Properties[WindowsAPIKeys.Capacity.ToString()].Value.ToString());
                    }
                    catch
                    {
                        return "查询失败";
                    }
                }
            }
            return CommonUtlity.ToGB((double)capacity, 1024.0);
        }

        /// 

        /// 获取硬盘容量
        /// 
        public string GetDiskSize()
        {
            string result = string.Empty;
            StringBuilder sb = new StringBuilder();
            try
            {
                string hdId = string.Empty;
                ManagementClass hardDisk = new ManagementClass(WindowsAPIType.win32_DiskDrive.ToString());
                ManagementObjectCollection hardDiskC = hardDisk.GetInstances();
                foreach (ManagementObject m in hardDiskC)
                {
                    long capacity = Convert.ToInt64(m[WindowsAPIKeys.Size.ToString()].ToString());
                    sb.Append(CommonUtlity.ToGB(capacity, 1000.0) + "+");
                }
                result = sb.ToString().TrimEnd('+');
            }
            catch
            {

            }
            return result;
        }
        /// 

        /// 电脑型号
        /// 
        public string GetVersion()
        {
            string str = "查询失败";
            try
            {
                string hdId = string.Empty;
                ManagementClass hardDisk = new ManagementClass(WindowsAPIType.Win32_ComputerSystemProduct.ToString());
                ManagementObjectCollection hardDiskC = hardDisk.GetInstances();
                foreach (ManagementObject m in hardDiskC)
                {
                    str = m[WindowsAPIKeys.Version.ToString()].ToString();                    break;
                }
            }
            catch
            {

            }
            return str;
        }
        /// 

        /// 获取分辨率
        /// 
        public string GetFenbianlv()
        {
            string result = "1920*1080";
            try
            {
                string hdId = string.Empty;
                ManagementClass hardDisk = new ManagementClass(WindowsAPIType.Win32_DesktopMonitor.ToString());
                ManagementObjectCollection hardDiskC = hardDisk.GetInstances();
                foreach (ManagementObject m in hardDiskC)
                {
                    result = m[WindowsAPIKeys.ScreenWidth.ToString()].ToString() + "*" + 
m[WindowsAPIKeys.ScreenHeight.ToString()].ToString();
                    break;
                }
            }
            catch
            {

            }
            return result;
        }
        /// 

        /// 显卡 芯片,显存大小
        /// 
        public Tuple GetVideoController()
        {
            Tuple result = null;
            try
            {

                ManagementClass hardDisk = new ManagementClass(WindowsAPIType.Win32_VideoController.ToString());
                ManagementObjectCollection hardDiskC = hardDisk.GetInstances();
                foreach (ManagementObject m in hardDiskC)
                {
                    result = new Tuple(m[WindowsAPIKeys.VideoProcessor.ToString()].ToString()
.Replace("Family", ""), CommonUtlity.ToGB(Convert.ToInt64(m[WindowsAPIKeys.AdapterRAM.ToString()].ToString()), 1024.0));
                    break;
                }
            }
            catch
            {

            }
            return result;
        }

        /// 

        /// 操作系统版本
        /// 
        public string GetOS_Version()
        {
            string str = "Windows 10";
            try
            {
                string hdId = string.Empty;
                ManagementClass hardDisk = new ManagementClass(WindowsAPIType.Win32_OperatingSystem.ToString());
                ManagementObjectCollection hardDiskC = hardDisk.GetInstances();
                foreach (ManagementObject m in hardDiskC)
                {
                    str = m[WindowsAPIKeys.Name.ToString()].ToString().Split('|')[0].Replace("Microsoft", "");
                    break;
                }
            }
            catch
            {

            }
            return str;
        }

    }

这里只是枚举了部分api，有兴趣的可以查看其它的windows api 并通过power shell查看，然后转化为c# 代码即可。

这里需要注意，硬盘容量在转化的时候需要除以1000，而不是1024.但内存是需要除以1024的，这点需要注意。

转化方法：

         /// 
  
        /// 将字节转换为GB
        /// 
  
        /// 字节值  
        /// 除数，硬盘除以1000，内存除以1024  
        ///   
        public static string ToGB(double size, double mod)
        {
            String[] units = new String[] { "B", "KB", "MB", "GB", "TB", "PB" };
            int i = 0;
            while (size >= mod)
            {
                size /= mod;
                i++;
            }
            return Math.Round(size) + units[i];
        }