Question

怎么用 c#监视CPU 和内存？

我做的是GUI界面，求监控代码就好。两个都要用到而且很急。监控：实时信息。不是读取硬件信息！

Answer 1

监控CPU信息可以使用C#里面的performance counter类，
例如下面所示
var cpuPerformanceCounter = new PerformanceCounter();
cpuPerformanceCounter.CategoryName = "Processor";
cpuPerformanceCounter.CounterName = "% Processor Time";
cpuPerformanceCounter.InstanceName = "_Total";
cpuPerformanceCounter.NextValue();
然后使用NextValue就可以获得CPU的使用率

内存的代码可以使用windows api： GlobalMemoryStatus函数，直接调用就可以了

追问

这个是监视但CPU的。4核 64位的是否能用？

追答

可以 这个是.net API, 没有问题的

追问

PerformanceCounter 找不到这个实例？？爆error

追答

错误贴上来看看，还有你有没有skype账号，要不知道这个及时交流太费劲了

追问

((System.ComponentModel.ISupportInitialize)(this.performanceCounter1)).EndInit(); 这个地方报错。我这在公司没有，可以等6点以后聊发邮件到lininalai@163.com

追答

这个代码，是没有问题的，我的机器就是4核4g win7 64 bit

追问

cpuPerformanceCounter.NextValue();
这个值是怎么输出的？

追答

直接获取返回值就行了， 之所以提前调用一次是因为第一次的值是空的，这个时候可以避免第一次取值取不到的问题，

Answer 2

using System;
using System.Management;
namespace ZGX.Common
{
/// <summary>
/// Computer Information
/// </summary>
public class Computer
{
public string CpuID;
public string MacAddress;
public string DiskID;
public string IpAddress;
public string LoginUserName;
public string ComputerName;
public string SystemType;
public string TotalPhysicalMemory; //单位：M
private static Computer _instance;
public static Computer Instance()
{
if (_instance == null)
_instance = new Computer();
return _instance;
}
/// <summary>
/// 构造函数
/// </summary>
public Computer()
{
CpuID = GetCpuID();
MacAddress = GetMacAddress();
DiskID = GetDiskID();
IpAddress = GetIPAddress();
LoginUserName = GetUserName();
SystemType = GetSystemType();
TotalPhysicalMemory = GetTotalPhysicalMemory();
ComputerName = GetComputerName();
}
/// <summary>
/// 获取cpu序列号
/// </summary>
/// <returns></returns>
string GetCpuID()
{
try
{
//获取CPU序列号代码
string cpuInfo = "";//cpu序列号
ManagementClass mc = new ManagementClass("Win32_Processor");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
}
moc = null;
mc = null;
return cpuInfo;
}
catch
{
return "unknow";
}
finally
{
}
}
/// <summary>
/// 获取网卡硬件地址
/// </summary>
/// <returns></returns>
string GetMacAddress()
{
try
{
//获取网卡硬件地址
string mac = "";
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
if ((bool)mo["IPEnabled"] == true)
{
mac = mo["MacAddress"].ToString();
break;
}
}
moc = null;
mc = null;
return mac;
}
catch
{
return "unknow";
}
finally
{
}
}
/// <summary>
/// 获取IP地址
/// </summary>
/// <returns></returns>
string GetIPAddress()
{
try
{
//获取IP地址
string st = "";
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
if ((bool)mo["IPEnabled"] == true)
{
//st=mo["IpAddress"].ToString();
System.Array ar;
ar = (System.Array)(mo.Properties["IpAddress"].Value);
st = ar.GetValue(0).ToString();
break;
}
}
moc = null;
mc = null;
return st;
}
catch
{
return "unknow";
}
finally
{
}
}
/// <summary>
/// 获取硬盘ID
/// </summary>
/// <returns></returns>
string GetDiskID()
{
try
{
//获取硬盘ID
String HDid = "";
ManagementClass mc = new ManagementClass("Win32_DiskDrive");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
HDid = (string)mo.Properties["Model"].Value;
}
moc = null;
mc = null;
return HDid;
}
catch
{
return "unknow";
}
finally
{
}
}
/// <summary>
/// 操作系统的登录用户名
/// </summary>
/// <returns></returns>
string GetUserName()
{
try
{
string st = "";
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
st = mo["UserName"].ToString();
}
moc = null;
mc = null;
return st;
}
catch
{
return "unknow";
}
finally
{
}
}

/// <summary>
/// PC类型
/// </summary>
/// <returns></returns>
string GetSystemType()
{
try
{
string st = "";
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
st = mo["SystemType"].ToString();
}
moc = null;
mc = null;
return st;
}
catch
{
return "unknow";
}
finally
{
}
}
/// <summary>
/// 物理内存
/// </summary>
/// <returns></returns>
string GetTotalPhysicalMemory()
{
try
{
string st = "";
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
st = mo["TotalPhysicalMemory"].ToString();
}
moc = null;
mc = null;
return st;
}
catch
{
return "unknow";
}
finally
{
}
}
/// <summary>
/// 电脑名称
/// </summary>
/// <returns></returns>
string GetComputerName()
{
try
{
return System.Environment.GetEnvironmentVariable("ComputerName");
}
catch
{
return "unknow";
}
finally
{
}
}

}
}

追问

这个是获取硬件信息的，不是监视CPU和内存的。我要的是实时监控的