摘要

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。

方法

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];        }