1.WMI简介
wmi是英文windows management instrumentation的简写，通过使用wmi，我们可以获取本地或远程服务器的性能参数和进程运行情况，以及大部分硬件信息，但前提是运行的用户要有足够的权限，如administrator组用户等。这也是做负载均衡所需要且比较方便快捷的途径。
2.使用时首先添加System.Management.dll，然后引用
using System.Management;
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3.定义远程访问
public class ManagementConnectPool ...{ private static System.Management.ConnectionOptions Conn = new ConnectionOptions() ; private static ManagementObjectSearcher mos = new ManagementObjectSearcher(); private string username = ""; private string pwd = ""; private string space=""; private string server = ""; public ManagementConnectPool(string mpusername,string mppwd , string mpspace ,string mpserver) ...{ this.username = mpusername; this.pwd = mppwd; this.space = mpspace; this.server = mpserver; Conn.Username = mpusername; Conn.Password = mppwd; string scopestring ="//" + mpserver + mpspace; System.Management.ManagementScope Ms = new ManagementScope(scopestring); Ms.Connect(); mos.Scope = Ms; } public ManagementObjectCollection getQueryResult(string queryString) ...{ ObjectQuery oq = new ObjectQuery(); oq.QueryString = queryString; mos.Query = oq; ManagementObjectCollection moc =mos.Get(); return moc; } }
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4.获取CPU，内存，网络流量等信息
public class Monitor ...{ private string username = ""; private string pwd =""; private string ip = ""; ManagementConnectPool mcp; WMSServerClass server; public Monitor(string username,string pwd,string ip)...{ this.username = username; this.pwd = pwd ; this.ip = ip; mcp = new ManagementConnectPool(username,pwd,"/root/cimv2",ip); server = new WMSServerClass(); } WMI方式获取网卡流量#region WMI方式获取网卡流量 private void getNetWorkFlow() ...{ManagementObjectCollection moc = mcp.getQueryResult(@"select * from Win32_NetworkAdapter where macaddressnull and manufacturer'Microsoft'"); string[] list = new string[moc.Count] ; foreach(System.Management.ManagementObject mymac in moc) ...{ string a = mymac["Speed"].ToString();//null WMI未实现该属性 Console.WriteLine(a.ToString()); } } #endregion WMI方式获取CPU信息#region WMI方式获取CPU信息 private void getCpuInfo() ...{ ManagementObjectCollection moc = mcp.getQueryResult("select * from Win32_Processor"); string[] list = new string[moc.Count]; int i = 0; foreach(ManagementObject mo in moc) ...{ string total = mo.GetPropertyValue("LoadPercentage").ToString(); list[i]=total; i++; } } #endregion WMI方式获取内存使用率#region WMI方式获取内存使用率 public string getMemoryUsage() ...{ManagementObjectCollection moc = mcp.getQueryResult("select * from Win32_LogicalMemoryConfiguration"); int totalm = 1; int avilablem = 1; foreach(ManagementObject mo in moc) ...{ string total = mo.GetPropertyValue("TotalPhysicalMemory").ToString(); totalm = int.Parse(total); } moc = mcp.getQueryResult("select * from Win32_PerfRawData_PerfOS_Memory"); foreach(ManagementObject mo in moc) ...{ string avilable = mo.GetPropertyValue("AvailableKBytes").ToString(); avilablem = int.Parse(avilable); } int usedm = totalm - avilablem; double memoryusage = (double)usedm * (double)100 / (double)totalm ; return memoryusage.ToString(); } #endregion}
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5.获取本地机器信息（WEB）
1.如何用WMI获得指定磁盘的容量#region 1.如何用WMI获得指定磁盘的容量 private string DriveType(string type) ...{ string rtntype=""; switch (type) ...{ case "1": rtntype="Not Type"; break; case "2": rtntype="Floppy disk"; break; case "3": rtntype="Hard disk"; break; case "4": rtntype="Removable drive or network drive"; break; case "5": rtntype="CD-ROM"; break; case "6": rtntype="RAM disk"; break; default : break; } return rtntype; } private void Button1_Click(object sender, System.EventArgs e) ...{ SelectQuery query=new SelectQuery("Select * From Win32_LogicalDisk"); ManagementObjectSearcher searcher=new ManagementObjectSearcher(query); foreach(ManagementBaseObject disk in searcher.Get()) ...{ Response.Write(disk["Name"] +" "+DriveType(disk["DriveType"].ToString()) + " " + disk["VolumeName"]+"
"); } } #endregion 2.如何用WMI获得指定磁盘的容量#region 2.如何用WMI获得指定磁盘的容量 private void Button2_Click(object sender, System.EventArgs e) ...{ ManagementObject disk = new ManagementObject("win32_logicaldisk.deviceid="c:""); disk.Get(); Response.Write("Logical Disk Size = " + disk["Size"] + " bytes"); } #endregion 3.如何列出机器中所有的共享资源#region 3.如何列出机器中所有的共享资源 private void Button3_Click(object sender, System.EventArgs e) ...{ ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_share"); foreach (ManagementObject share in searcher.Get()) ...{ Response.Write(share.GetText(TextFormat.Mof)); } } #endregion 4.怎样写程控制让系统中的某个文件夹共享或取消共享#region 4.怎样写程控制让系统中的某个文件夹共享或取消共享 private void Button4_Click(object sender, System.EventArgs e) ...{ /**//*首先，这需要以有相应权限的用户登录系统才行 将 object[] obj = {"C:/Temp","我的共享",0,10,"Dot Net 实现的共享",""}; 改为 object[] obj = {"C:/Temp","我的共享",0,null,"Dot Net 实现的共享",""}; 就可以实现授权给最多用户了。 */ ManagementClass _class = new ManagementClass(new ManagementPath("Win32_Share")); object[] obj = ...{"C:/Temp","我的共享",0,10,"Dot Net 实现的共享",""}; _class.InvokeMethod("create",obj); } #endregion 5.如何获得系统服务的运行状态#region 5.如何获得系统服务的运行状态 private void Button5_Click(object sender, System.EventArgs e) ...{ string[] lvData = new string[4]; ManagementObjectSearcher searcher =new ManagementObjectSearcher("SELECT * FROM Win32_Service"); foreach (ManagementObject mo in searcher.Get()) ...{ lvData[0] = mo["Name"].ToString(); lvData[1] = mo["StartMode"].ToString(); if (mo["Started"].Equals(true)) lvData[2] = "Started"; else lvData[2] = "Stop"; lvData[3] = mo["StartName"].ToString(); Response.Write(lvData[0]+lvData[1]+lvData[2]+lvData[3]); } } #endregion 6.通过WMI修改IP，而实现不用重新启动#region 6.通过WMI修改IP，而实现不用重新启动 private void Button6_Click(object sender, System.EventArgs e) ...{ ReportIP(); // SwitchToDHCP(); SwitchToprivate(); Thread.Sleep( 5000 ); ReportIP(); Response.Write( "end." ); } private void SwitchToDHCP() ...{ ManagementBaseObject inPar = null; ManagementBaseObject outPar = null; ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration"); ManagementObjectCollection moc = mc.GetInstances(); foreach( ManagementObject mo in moc ) ...{ if( ! (bool) mo["IPEnabled"] ) continue; inPar = mo.GetMethodParameters("EnableDHCP"); outPar = mo.InvokeMethod( "EnableDHCP", inPar, null ); break; } } private void SwitchToprivate() ...{ ManagementBaseObject inPar = null; ManagementBaseObject outPar = null; ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration"); ManagementObjectCollection moc = mc.GetInstances(); foreach( ManagementObject mo in moc ) ...{ if( ! (bool) mo[ "IPEnabled" ] ) continue; inPar = mo.GetMethodParameters( "Enableprivate" ); inPar["IPAddress"] = new string[] ...{ "192.168.1.1" }; inPar["SubnetMask"] = new string[] ...{ "255.255.255.0" }; outPar = mo.InvokeMethod( "Enableprivate", inPar, null ); break; } } private void ReportIP() ...{ Response.Write( "****** Current IP addresses:" ); ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration"); ManagementObjectCollection moc = mc.GetInstances(); foreach( ManagementObject mo in moc ) ...{ if( ! (bool) mo[ "IPEnabled" ] ) continue; string str="{0} SVC: '{1}' MAC: [{2}]"; str= string.Format(mo["Caption"].ToString(), mo["ServiceName"].ToString(),mo["MACAddress"].ToString()); Response.Write(str); string[] addresses = (string[]) mo[ "IPAddress" ]; string[] subnets = (string[]) mo[ "IPSubnet" ]; Response.Write( " Addresses :" ); foreach(string sad in addresses) Response.Write(sad+"
"); Response.Write( " Subnets :" ); foreach(string sub in subnets ) Response.Write(sub+"
"); } } #endregion 7.如何利用WMI远程重启远程计算机#region 7.如何利用WMI远程重启远程计算机 private void Button7_Click(object sender, System.EventArgs e) ...{ Response.Write("Computer details retrieved using Windows Management Instrumentation (WMI)"); Response.Write("mailto:singlepine@hotmail.com"); Response.Write("========================================================================="); //连接远程计算机 ConnectionOptions co = new ConnectionOptions(); co.Username = "john"; co.Password = "john"; System.Management.ManagementScope ms = new System.Management.ManagementScope("//192.168.1.2/root/cimv2", co); //查询远程计算机 System.Management.ObjectQuery oq = new System.Management.ObjectQuery("SELECT * FROM Win32_OperatingSystem"); ManagementObjectSearcher query1 = new ManagementObjectSearcher(ms,oq); ManagementObjectCollection queryCollection1 = query1.Get(); foreach( ManagementObject mo in queryCollection1 ) ...{ string[] ss=...{""}; mo.InvokeMethod("Reboot",ss); Response.Write(mo.ToString()); } } #endregion 8.利用WMI创建一个新的进程#region 8.利用WMI创建一个新的进程 private void Button8_Click(object sender, System.EventArgs e) ...{ //Get the object on which the method will be invoked ManagementClass processClass = new ManagementClass("Win32_Process"); //Get an input parameters object for this method ManagementBaseObject inParams = processClass.GetMethodParameters("Create"); //Fill in input parameter values inParams["CommandLine"] = "calc.exe"; //Execute the method ManagementBaseObject outParams = processClass.InvokeMethod ("Create", inParams, null); //Display results //Note: The return code of the method is provided in the "returnvalue" property of the outParams object Response.Write("Creation of calculator process returned: " + outParams["returnvalue"]); Response.Write("Process ID: " + outParams["processId"]); } #endregion 9.如何通过WMI终止一个进程#region 9.如何通过WMI终止一个进程 private void Button9_Click(object sender, System.EventArgs e) ...{ ManagementObject service = new ManagementObject("win32_service="winmgmt""); InvokeMethodOptions options = new InvokeMethodOptions(); options.Timeout = new TimeSpan(0,0,0,5); ManagementBaseObject outParams = service.InvokeMethod("StopService", null, options); Response.Write("Return Status = " + outParams["Returnvalue"]); } #endregion 10.如何用WMI 来获取远程机器的目录以及文件#region 10.如何用WMI 来获取远程机器的目录以及文件 private void Button10_Click(object sender, System.EventArgs e) ...{ ManagementObject disk = new ManagementObject( "win32_logicaldisk.deviceid="c:""); disk.Get(); Response.Write("Logical Disk Size = " + disk["Size"] + " bytes"); } #endregion 11.网卡的MAC地址#region 11.网卡的MAC地址 private void Button11_Click(object sender, System.EventArgs e) ...{ ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration"); ManagementObjectCollection moc = mc.GetInstances(); foreach(ManagementObject mo in moc) ...{ if((bool)mo["IPEnabled"] == true) Response.Write("MAC address"+mo["MacAddress"].ToString()+"
"); mo.Dispose(); } } #endregion 12.CPU的系列号#region 12.CPU的系列号 private void Button12_Click(object sender, System.EventArgs e) ...{ string cpuInfo = "";//cpu序列号 ManagementClass cimobject = new ManagementClass("Win32_Processor"); ManagementObjectCollection moc = cimobject.GetInstances(); foreach(ManagementObject mo in moc) ...{ cpuInfo = mo.Properties["ProcessorId"].Value.ToString(); Response.Write(cpuInfo); } } #endregion 13.主板的系列号#region 13.主板的系列号 private void Button13_Click(object sender, System.EventArgs e) ...{ ManagementObjectSearcher searcher=new ManagementObjectSearcher("SELECT * FROM Win32_BaseBoard"); foreach(ManagementObject share in searcher.Get()) ...{ Response.Write("主板制造商:" + share["Manufacturer"].ToString()) ; Response.Write("型号:" +share["Product"].ToString()) ; Response.Write("序列号:"+share["SerialNumber"].ToString()) ; } } #endregion 14.获取硬盘ID#region 14.获取硬盘ID private void Button14_Click(object sender, System.EventArgs e) ...{ String HDid; ManagementClass cimobject = new ManagementClass("Win32_DiskDrive"); ManagementObjectCollection moc = cimobject.GetInstances(); foreach(ManagementObject mo in moc) ...{ HDid = (string)mo.Properties["Model"].Value; Response.Write(HDid); } } #endregion 15.获取本机的用户列表#region 15.获取本机的用户列表 private void Button15_Click(object sender, System.EventArgs e) ...{ SelectQuery query = new SelectQuery("SELECT * FROM Win32_UserAccount"); ManagementObjectSearcher searcher = new ManagementObjectSearcher(query); foreach(ManagementObject os in searcher.Get()) ...{ Response.Write(os["Name"]); } } #endregion }
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通过上面介绍的方法，可以很轻松的获取远程或本地机器的性能，进程和硬件信息等。另外：WMI也可以通过使用Vbscript等脚本调用。
说明：其中部分资源来自网友小山的blog。但不够详细说明WMI在服务器性能方面的能力！
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