C# 获取计算机CPU使用率/内存使用率/磁盘使用率
CPU:
void Main() { ManagementObjectSearcher searcher = new ManagementObjectSearcher("select PercentProcessorTime from Win32_PerfFormattedData_PerfOS_Processor WHERE Name=\"_Total\""); var cpuItem = searcher.Get().Cast<ManagementObject>().Select(item => new { PercentProcessorTime = item["PercentProcessorTime"] }).First(); if (cpuItem != null && cpuItem.PercentProcessorTime != null) Debug.Print("CPU:" + cpuItem.PercentProcessorTime.ToString()); }
Disk:
public static Dictionary<string,int> GetDisksUsedRate() { var result = new Dictionary<string,int>(); var searcher = new ManagementObjectSearcher("Select Name,PercentDiskTime from Win32_PerfFormattedData_PerfDisk_PhysicalDisk WHERE Name != \"_Total\""); var diskItems = searcher.Get().Cast<ManagementObject>().ToList(); foreach (var diskItem in diskItems) result.Add(diskItem["Name"].ToString(), Convert.ToInt32(diskItem["PercentDiskTime"])); return result; }
Memory:
#region 获取内存使用率 #region 可用内存 /// <summary> /// 获取可用内存 /// </summary> internal static long? GetMemoryAvailable() { const int MbDiv = 1024 * 1024; long availablebytes = 0; var managementClassOs = new ManagementClass("Win32_OperatingSystem"); foreach (var managementBaseObject in managementClassOs.GetInstances()) if (managementBaseObject["FreePhysicalMemory"] != null) availablebytes = 1024 * long.Parse(managementBaseObject["FreePhysicalMemory"].ToString()); return availablebytes / MbDiv; } #endregion internal static double? GetMemoryUsed() { float? PhysicalMemory = GetPhysicalMemory(); float? MemoryAvailable = GetMemoryAvailable(); double? MemoryUsed = (double?)(PhysicalMemory - MemoryAvailable); double currentMemoryUsed = (double)MemoryUsed ; return currentMemoryUsed ; } private static long? GetPhysicalMemory() { //获得物理内存 const int MbDiv = 1024 * 1024; var managementClass = new ManagementClass("Win32_ComputerSystem"); var managementObjectCollection = managementClass.GetInstances(); foreach (var managementBaseObject in managementObjectCollection) if (managementBaseObject["TotalPhysicalMemory"] != null) return long.Parse(managementBaseObject["TotalPhysicalMemory"].ToString()) / MbDiv; return null; } public static double? GetMemoryUsedRate() { float? PhysicalMemory = GetPhysicalMemory(); float? MemoryAvailable = GetMemoryAvailable(); double? MemoryUsedRate =(double?)(PhysicalMemory - MemoryAvailable)/ PhysicalMemory; return MemoryUsedRate.HasValue ? Convert.ToDouble(MemoryUsedRate * 100) : 0; } #endregion
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