调用API获取系统信息

首先定义外部API导入DLL

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[DllImport("kernel32")]  public static extern void GetSystemInfo(ref CPU_INFO cpuinfo); [DllImport("kernel32")] public static extern void GlobalMemoryStatus(ref MEMORY_INFO meminfo);

结构体定义

MEMORY_INFO

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[StructLayout( LayoutKind.Sequential)]     public struct MEMORY_INFO     {         public uint dwLength;         /// <summary>         /// 被使用内存(百分率)         /// </summary>         public uint dwMemoryLoad;         /// <summary>         /// 物理内存(字节)         /// </summary>         public uint dwTotalPhys;         /// <summary>         /// 可使用的物理内存(字节)         /// </summary>         public uint dwAvailPhys;         /// <summary>         /// 交换文件总大小(字节)         /// </summary>         public uint dwTotalPageFile;         /// <summary>         /// 尚可交换文件大小(字节)         /// </summary>         public uint dwAvailPageFile;         /// <summary>         /// 总虚拟内存(字节)         /// </summary>         public uint dwTotalVirtual;         /// <summary>         /// 未用虚拟内存(字节)         /// </summary>         public uint dwAvailVirtual;         }

CPU_INFO

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[StructLayout(LayoutKind.Sequential)]     public struct CPU_INFO     {         /// <summary>         /// CPU的OEM_ID         /// </summary>         public uint dwOemId;         /// <summary>         /// CPU中的页面大小         /// </summary>         public uint dwPageSize;         /// <summary>         /// 最小地址         /// </summary>         public uint lpMinimumApplicationAddress;         /// <summary>         /// 最大地址         /// </summary>         public uint lpMaximumApplicationAddress;                    public uint dwActiveProcessorMask;         /// <summary>         /// CPU个数         /// </summary>         public uint dwNumberOfProcessors;         /// <summary>         /// CPU的类型         /// </summary>         public uint dwProcessorType;                    public uint dwAllocationGranularity;         /// <summary>         /// CPU等级         /// </summary>         public uint dwProcessorLevel;                    public uint dwProcessorRevision;  }

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//调用GetSystemInfo函数获取CPU的相关信息             CPU_INFO CpuInfo;             CpuInfo = new CPU_INFO();             GetSystemInfo(ref CpuInfo);             Console.WriteLine("本计算机中有" + CpuInfo.dwNumberOfProcessors.ToString() + "个CPU");             Console.WriteLine("CPU的类型为" + CpuInfo.dwProcessorType.ToString());             Console.WriteLine("CPU等级为" + CpuInfo.dwProcessorLevel.ToString());             Console.WriteLine("CPU的OEM ID为" + CpuInfo.dwOemId.ToString());             Console.WriteLine("CPU中的页面大小为" + CpuInfo.dwPageSize.ToString());             Console.WriteLine("" + CpuInfo.dwActiveProcessorMask.ToString());             Console.WriteLine("" + CpuInfo.dwAllocationGranularity.ToString());             Console.WriteLine("" + CpuInfo.dwProcessorRevision.ToString());             Console.WriteLine("" + CpuInfo.lpMaximumApplicationAddress.ToString());             Console.WriteLine("" + CpuInfo.lpMinimumApplicationAddress.ToString());             //调用GlobalMemoryStatus函数获取内存的相关信息             MEMORY_INFO MemInfo;             MemInfo = new MEMORY_INFO();             GlobalMemoryStatus(ref MemInfo);              //感觉的这个使用率有点假          Console.WriteLine(MemInfo.dwMemoryLoad.ToString() + "%的内存正在使用");             Console.WriteLine("物理内存共有" + ((MemInfo.dwTotalPhys/1024)/1024).ToString() + "MB");             Console.WriteLine("可使用的物理内存有" + ((MemInfo.dwAvailPhys/1024)/1024).ToString() + "MB");             Console.WriteLine("交换文件总大小为" + ((MemInfo.dwTotalPageFile/1024)/1024).ToString() + "MB");             Console.WriteLine("尚可交换文件大小为" + ((MemInfo.dwAvailPageFile/1024)/1024).ToString() + "MB");             Console.WriteLine("总虚拟内存有" + ((MemInfo.dwTotalVirtual/1024)/1024).ToString() + "MB");             Console.WriteLine("未用虚拟内存有" + ((MemInfo.dwAvailVirtual/1024)/1024).ToString() + "MB");

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