Use C # to get CPU number, HDD number and other system related environment, properties

If the use of C # to obtain systems related to the environment and properties, this is also a lot of questions on the Internet, but most of the questions are not answered, recently just want to do the relevant things, sorted out, provided to you, I hope to provide you with the reference points:

First you need to define several structures (struct) to facilitate dllimport to be invoked as a return parameter. Here's the code:

CpuInfo.cs

using System;


using System.Configuration;


using System.Runtime.InteropServices;





/**//**


* Layoutkind.automatic: Allows the running state to reorder type members for increased efficiency


* Note: Never use this option to invoke a dynamically linked library function that is not governed.


* layoutkind.explicit: Sorts type members by FieldOffset property for each field


* LayoutKind.Sequential: Sorts the members of a type that appear in the domain of the jurisdictional type definition where they are not governed.


*/


/**////<summary>


///defines the information structure of the CPU


///</summary>


[StructLayout (layoutkind.sequential)]


public struct CpuInfo


... {


/**////<summary>


///OEM ID


///</summary>


public UINT Dwoemid;


/**////<summary>


///Page Size


///</summary>


public UINT dwPageSize;


public UINT lpminimumapplicationaddress;


public UINT lpmaximumapplicationaddress;


public UINT Dwactiveprocessormask;


/**////<summary>


///CPU Number


///</summary>


public UINT Dwnumberofprocessors;


/**////<summary>


///CPU Type


///</summary>


public UINT dwProcessorType;


public UINT Dwallocationgranularity;


/**////<summary>


///CPU Level


///</summary>


public UINT Dwprocessorlevel;


public UINT Dwprocessorrevision;


}


MemoryInfo.cs


using System;


using System.Configuration;


using System.Runtime.InteropServices;





/**//**


* Layoutkind.automatic: Allows the running state to reorder type members for increased efficiency


* Note: Never use this option to invoke a dynamically linked library function that is not governed.


* layoutkind.explicit: Sorts type members by FieldOffset property for each field


* LayoutKind.Sequential: Sorts the members of a type that appear in the domain of the jurisdictional type definition where they are not governed.


*/


/**////<summary>


///defines the information structure of the memory


///</summary>


[StructLayout (layoutkind.sequential)]


public struct Memoryinfo


... {


/**////<summary>


///


///</summary>


public UINT Dwlength;


/**////<summary>


///already used memory


///</summary>


public UINT dwMemoryLoad;


/**////<summary>


///Total Physical memory size


///</summary>


public UINT dwTotalPhys;


/**////<summary>


Available Physical memory size


///</summary>


public UINT dwAvailPhys;


/**////<summary>


///Exchange File Total size


///</summary>


public UINT dwTotalPageFile;


/**////<summary>


///available swap file size


///</summary>


public UINT dwAvailPageFile;


/**////<summary>


///Total virtual memory size


///</summary>


public UINT dwTotalVirtual;


/**////<summary>


///available virtual memory size


///</summary>


public UINT dwAvailVirtual;


}


SystemTimeInfo.cs


using System;


using System.Configuration;


using System.Runtime.InteropServices;





/**//**


* Layoutkind.automatic: Allows the running state to reorder type members for increased efficiency


* Note: Never use this option to invoke a dynamically linked library function that is not governed.


* layoutkind.explicit: Sorts type members by FieldOffset property for each field


* LayoutKind.Sequential: Sorts the members of a type that appear in the domain of the jurisdictional type definition where they are not governed.


*/


/**////<summary>


///The information structure that defines the system time


///</summary>


[StructLayout (layoutkind.sequential)]


public struct Systemtimeinfo


... {


/**////<summary>


///Year


///</summary>


public ushort Wyear;


/**////<summary>


///Month


///</summary>


public ushort Wmonth;


/**////<summary>


///Week


///</summary>


public ushort Wdayofweek;


/**////<summary>


///Day


///</summary>


public ushort Wday;


/**////<summary>


///hours


///</summary>


public ushort Whour;


/**////<summary>


///minutes


///</summary>


public ushort Wminute;


/**////<summary>


///seconds


///</summary>


public ushort Wsecond;


/**////<summary>


///Millisecond


///</summary>


public ushort Wmilliseconds;


}