C#-获取磁盘，cpu,内存信息

获取磁盘信息

zongdaxiao = GetHardDiskSpace("C") * 1.0 / 1024;
user = GetHardDiskFreeSpace("C") * 1.0 / 1024;

 ///
/// 获取指定驱动器的空间总大小(单位为B)
///
///  只需输入代表驱动器的字母即可 （大写）
///
public long GetHardDiskSpace(string str_HardDiskName)
{
      long totalSize = new long();
      str_HardDiskName = str_HardDiskName + ":\\";
      System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();
      foreach (System.IO.DriveInfo drive in drives)
      {
            if (drive.Name == str_HardDiskName)
            {
                 totalSize = drive.TotalSize / (1024 * 1024);
            }
      }
            return totalSize;
}

///
/// 获取指定驱动器的剩余空间总大小(单位为B)
///
///  只需输入代表驱动器的字母即可
///
public long GetHardDiskFreeSpace(string str_HardDiskName)
{
     long freeSpace = new long();
     str_HardDiskName = str_HardDiskName + ":\\";
     System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();
     foreach (System.IO.DriveInfo drive in drives)
     {
         if (drive.Name == str_HardDiskName)
         {
                freeSpace = drive.TotalFreeSpace / (1024 * 1024);
         }
    }
    return freeSpace;
}

*****************************************************
获取总内存（运行）
zongneicun = GetMemoryStatus();

 [StructLayout(LayoutKind.Sequential)]
 public struct MEMORY_INFO
 {
         public uint dwLength;
         public uint dwMemoryLoad;
         public uint dwTotalPhys;
         public uint dwAvailPhys;
         public uint dwTotalPageFile;
         public uint dwAvailPageFile;
         public uint dwTotalVirtual;
         public uint dwAvailVirtual;
 }
 [DllImport("kernel32")]
 public static extern void GlobalMemoryStatus(ref MEMORY_INFO meminfo);
 MEMORY_INFO MemInfo = new MEMORY_INFO();

 private long GetMemoryStatus()
 {
     GlobalMemoryStatus(ref MemInfo);
     long totalMb = Convert.ToInt64(MemInfo.dwTotalPhys.ToString()) / 1024 / 1024;
     //long avaliableMb = Convert.ToInt64(MemInfo.dwAvailPhys.ToString()) / 1024 / 1024;
      return totalMb;
      //MessageBox.Show("物理内存共有" + totalMb.ToString () + " MB" + "可使用的物理内存有" + avaliableMb.ToString () + " MB");
      //Console.WriteLine("物理内存共有" + totalMb + " MB");
      //Console.WriteLine("可使用的物理内存有" + avaliableMb + " MB");
}

******************************************************

//获得pro使用内存
public int pnc()
{
      Process[] pro = Process.GetProcesses();
      double total = 0;
      Process temp;
      int i;
      for (i = 0; i < pro.Length; i++)
      {
            temp = pro[i];
            total = temp.PrivateMemorySize + total;
       }
       return (int)(total / 1024 / 1024);
}
*******************************************************

获取cpu使用率
PerformanceCounter PC = new PerformanceCounter("Processor", "% Processor Time", "_Total");
label1.Text = "Cpu： " + Convert.ToInt32(PC.NextValue()) + "%";

*************************************************************
获取系统运行时间
label4.Text = "System Runtime: " + (Environment.TickCount / 60000).ToString();