调用API查看系统内存使用状况_c#调用api获取内存-优快云博客

本文链接：https://blog.youkuaiyun.com/crazythief/article/details/187680

此博客展示了使用C#获取内存状态的代码。通过定义结构体和类，利用DllImport调用kernel32的GlobalMemoryStatus函数，最终输出内存的各项状态信息，如内存负载、物理内存总量等。

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using System;
using System.Runtime.InteropServices;

/*
typedef struct _MEMORYSTATUS
{
DWORD dwLength;
DWORD dwMemoryLoad;
DWORD dwTotalPhys;
DWORD dwAvailPhys;
DWORD dwTotalPageFile;
DWORD dwAvailPageFile;
DWORD dwTotalVirtual;
DWORD dwAvailVirtual;
} MEMORYSTATUS;
*/

[ StructLayout( LayoutKind.Sequential )]
public class MemoryStatus
{
public int Length;
public int MemoryLoad;
public int TotalPhys;
public int AvailPhys;
public int TotalPageFile;
public int AvailPageFile;
public int TotalVirtual;
public int AvailVirtual;
}

public class LibWrap
{
[ DllImport( "kernel32", EntryPoint="GlobalMemoryStatus" )]
public static extern void GetMemoryStatus( [ In, Out ] MemoryStatus oMemoryStatus );
}

public class App
{
public static void Main()
{
MemoryStatus oMemoryStatus = new MemoryStatus();

LibWrap.GetMemoryStatus( oMemoryStatus );

  Console.WriteLine( "Length:        {0}", oMemoryStatus.Length );
  Console.WriteLine( "MemoryLoad:    {0}", oMemoryStatus.MemoryLoad );
  Console.WriteLine( "TotalPhys:     {0}", oMemoryStatus.TotalPhys );
  Console.WriteLine( "AvailPhys:     {0}", oMemoryStatus.AvailPhys );
  Console.WriteLine( "TotalPageFile: {0}", oMemoryStatus.TotalPageFile );
  Console.WriteLine( "AvailPageFile: {0}", oMemoryStatus.AvailPageFile );
  Console.WriteLine( "TotalVirtual: {0}", oMemoryStatus.TotalVirtual );
  Console.WriteLine( "AvailVirtual: {0}", oMemoryStatus.AvailVirtual );
}
}