C#获取CPU占用率、内存占用、磁盘占用、进程信息
代码：
using System; using System.Collections.Generic; using System.Diagnostics; using System.Threading; using System.IO; using System.Text; using System.Management; using System.Runtime.InteropServices; namespace Lemony.SystemInfo { /// /// 系统信息类 - 获取CPU、内存、磁盘、进程信息 /// public class SystemInfo { private int m_ProcessorCount = 0; //CPU个数 private PerformanceCounter pcCpuLoad; //CPU计数器 private long m_PhysicalMemory = 0; //物理内存 private const int GW_HWNDFIRST = 0; private const int GW_HWNDNEXT = 2; private const int GWL_STYLE = (-16); private const int WS_VISIBLE = 268435456; private const int WS_BORDER = 8388608; #region AIP声明 [DllImport("IpHlpApi.dll")] extern static public uint GetIfTable(byte[] pIfTable, ref uint pdwSize, bool bOrder); [DllImport("User32")] private extern static int GetWindow(int hWnd, int wCmd); [DllImport("User32")] private extern static int GetWindowLongA(int hWnd, int wIndx); [DllImport("user32.dll")] private static extern bool GetWindowText(int hWnd, StringBuilder title, int maxBufSize); [DllImport("user32", CharSet = CharSet.Auto)] private extern static int GetWindowTextLength(IntPtr hWnd); #endregion #region 构造函数 /// /// 构造函数，初始化计数器等 /// public SystemInfo() { //初始化CPU计数器 pcCpuLoad = new PerformanceCounter("Processor", "% Processor Time", "_Total"); pcCpuLoad.MachineName = "."; pcCpuLoad.NextValue(); //CPU个数 m_ProcessorCount = Environment.ProcessorCount; //获得物理内存 ManagementClass mc = new ManagementClass("Win32_ComputerSystem"); ManagementObjectCollection moc = mc.GetInstances(); foreach (ManagementObject mo in moc) { if (mo["TotalPhysicalMemory"] != null) { m_PhysicalMemory = long.Parse(mo["TotalPhysicalMemory"].ToString()); } } } #endregion #region CPU个数 /// /// 获取CPU个数 /// public int ProcessorCount { get { return m_ProcessorCount; } } #endregion #region CPU占用率 /// /// 获取CPU占用率 /// public float CpuLoad { get { return pcCpuLoad.NextValue(); } } #endregion #region 可用内存 /// /// 获取可用内存 /// public long MemoryAvailable { get { long availablebytes = 0; //ManagementObjectSearcher mos = new ManagementObjectSearcher("SELECT * FROM Win32_PerfRawData_PerfOS_Memory"); //foreach (ManagementObject mo in mos.Get()) //{ // availablebytes = long.Parse(mo["Availablebytes"].ToString()); //} ManagementClass mos = new ManagementClass("Win32_OperatingSystem"); foreach (ManagementObject mo in mos.GetInstances()) { if (mo["FreePhysicalMemory"] != null) { availablebytes = 1024 * long.Parse(mo["FreePhysicalMemory"].ToString()); } } return availablebytes; } } #endregion #region 物理内存 /// /// 获取物理内存 /// public long PhysicalMemory { get { return m_PhysicalMemory; } } #endregion #region 获得分区信息 /// /// 获取分区信息 /// public List GetLogicalDrives() { List drives = new List(); ManagementClass diskClass = new ManagementClass("Win32_LogicalDisk"); ManagementObjectCollection disks = diskClass.GetInstances(); foreach (ManagementObject disk in disks) { // DriveType.Fixed 为固定磁盘(硬盘) if (int.Parse(disk["DriveType"].ToString()) == (int)DriveType.Fixed) { drives.Add(new DiskInfo(disk["Name"].ToString(), long.Parse(disk["Size"].ToString()), long.Parse(disk["FreeSpace"].ToString()))); } } return drives; } /// /// 获取特定分区信息 /// /// 盘符 public List GetLogicalDrives(char DriverID) { List drives = new List(); WqlObjectQuery wmiquery = new WqlObjectQuery("SELECT * FROM Win32_LogicalDisk WHERE DeviceID = ’" + DriverID + ":’"); ManagementObjectSearcher wmifind = new ManagementObjectSearcher(wmiquery); foreach (ManagementObject disk in wmifind.Get()) { if (int.Parse(disk["DriveType"].ToString()) == (int)DriveType.Fixed) { drives.Add(new DiskInfo(disk["Name"].ToString(), long.Parse(disk["Size"].ToString()), long.Parse(disk["FreeSpace"].ToString()))); } } return drives; } #endregion #region 获得进程列表 /// /// 获得进程列表 /// public List GetProcessInfo() { List pInfo = new List(); Process[] processes = Process.GetProcesses(); foreach (Process instance in processes) { try { pInfo.Add(new ProcessInfo(instance.Id, instance.ProcessName, instance.TotalProcessorTime.TotalMilliseconds, instance.WorkingSet64, instance.MainModule.FileName)); } catch { } } return pInfo; } /// /// 获得特定进程信息 /// /// 进程名称 public List GetProcessInfo(string ProcessName) { List pInfo = new List(); Process[] processes = Process.GetProcessesByName(ProcessName); foreach (Process instance in processes) { try { pInfo.Add(new ProcessInfo(instance.Id, instance.ProcessName, instance.TotalProcessorTime.TotalMilliseconds, instance.WorkingSet64, instance.MainModule.FileName)); } catch { } } return pInfo; } #endregion #region 结束指定进程 /// /// 结束指定进程 /// /// 进程的 Process ID public static void EndProcess(int pid) { try { Process process = Process.GetProcessById(pid); process.Kill(); } catch { } } #endregion #region 查找所有应用程序标题 /// /// 查找所有应用程序标题 /// /// 应用程序标题范型 public static List FindAllApps(int Handle) { List Apps = new List(); int hwCurr; hwCurr = GetWindow(Handle, GW_HWNDFIRST); while (hwCurr > 0) { int IsTask = (WS_VISIBLE | WS_BORDER); int lngStyle = GetWindowLongA(hwCurr, GWL_STYLE); bool TaskWindow = ((lngStyle & IsTask) == IsTask); if (TaskWindow) { int length = GetWindowTextLength(new IntPtr(hwCurr)); StringBuilder sb = new StringBuilder(2 * length + 1); GetWindowText(hwCurr, sb, sb.Capacity); string strTitle = sb.ToString(); if (!string.IsNullOrEmpty(strTitle)) { Apps.Add(strTitle); } } hwCurr = GetWindow(hwCurr, GW_HWNDNEXT); } return Apps; } #endregion } }
