WMI作为Windows 2000操作系统的一部分提供了可伸缩的,可扩展的管理架构.公共信息模型（CIM）是由分布式管理任务标准协会（DMTF）设计的一种可扩展的、面向对象的架构，用于管理系统、网络、应用程序、数据库和设备。Windows管理规范也称作CIM for Windows，提供了统一的访问管理信息的方式。如果需要获取详细的WMI信息请读者查阅MSDN。System.Management组件提供对大量管理信息和管理事件集合的访问，这些信息和事件是与根据 Windows 管理规范 (WMI) 结构对系统、设备和应用程序设置检测点有关的。
但是上面并不是我们最关心的，下面才是我们需要谈的话题。毫无疑问，我们要引用System.Management.Dll程序集，并要使用System.Management命名空间下的类，如ManagementClass,ManagementObject等。下面用一个名为Win32ServiceManager的类把服务的一些相关操作包装了一下，代码如下：
using System;
using System.Management;
namespace ZZ.Wmi
{
public class Win32ServiceManager
{ private string strPath;
private ManagementClass managementClass;
public Win32ServiceManager():this(".",null,null)
{
}
public Win32ServiceManager(string host,string userName,string password)
{
this.strPath = ""+host+"
ootcimv2:Win32_Service";
this.managementClass = new ManagementClass(strPath);
if(userName!=null&&userName.Length>0)
{
ConnectionOptions connectionOptions = new ConnectionOptions();
connectionOptions.Username = userName;
connectionOptions.Password = password;
ManagementScope managementScope =
new ManagementScope( "" +host+ "
ootcimv2",connectionOptions) ;
this.managementClass.Scope = managementScope;
}
}
// 验证是否能连接到远程计算机
public static bool RemoteConnectValidate(
string host,string userName,string password)
{
ConnectionOptions connectionOptions = new ConnectionOptions();
connectionOptions.Username = userName;
connectionOptions.Password = password;
ManagementScope managementScope = new ManagementScope
( "" +host+ "
ootcimv2",connectionOptions) ;
try
{
managementScope.Connect();
}
catch
{
}
return managementScope.IsConnected;
}
// 获取指定服务属性的值
public object GetServiceValue(string serviceName,string propertyName)
{
ManagementObject mo = this.managementClass.CreateInstance();
mo.Path = new ManagementPath(
this.strPath+".Name=""+serviceName+""");
return mo[propertyName];
}
// 获取所连接的计算机的所有服务数据
public string [,] GetServiceList()
{
string [,] services = new string [
this.managementClass.GetInstances().Count,4];
int i = 0;
foreach(ManagementObject mo in this.managementClass.GetInstances())
{
services[i,0] = (string)mo["Name"];
services[i,1] = (string)mo["DisplayName"];
services[i,2] = (string)mo["State"];
services[i,3] = (string)mo["StartMode"];
i++;
}
return services;
}
// 获取所连接的计算机的指定服务数据
public string [,] GetServiceList(string serverName)
{
return GetServiceList(new string []{serverName});
}
// 获取所连接的计算机的的指定服务数据
public string [,] GetServiceList(string [] serverNames)
{
string [,] services = new string [serverNames.Length,4];
ManagementObject mo = this.managementClass.CreateInstance();
for(int i = 0;i<serverNames.Length;i++)
{
mo.Path = new ManagementPath(
this.strPath+".Name=""+serverNames[i]+""");
services[i,0] = (string)mo["Name"];
services[i,1] = (string)mo["DisplayName"];
services[i,2] = (string)mo["State"];
services[i,3] = (string)mo["StartMode"];
} return services;
}
// 停止指定的服务
public string StartService(string serviceName)
{ string strRst = null;
ManagementObject mo = this.managementClass.CreateInstance();
mo.Path = new ManagementPath(
this.strPath+".Name=""+serviceName+""");
try
{
if((string)mo["State"]=="Stopped")//!(bool)mo["AcceptStop"]
mo.InvokeMethod("StartService",null);
}
catch(ManagementException e)
{ strRst =e.Message;
}
return strRst;
}
// 暂停指定的服务
public string PauseService(string serviceName)
{
string strRst = null;
ManagementObject mo = this.managementClass.CreateInstance();
mo.Path = new ManagementPath(
this.strPath+".Name=""+serviceName+""");
try
{
//判断是否可以暂停
if((bool)mo["acceptPause"]&&(string)mo["State"]=="Running")
mo.InvokeMethod("PauseService",null);
}
catch(ManagementException e)
{
strRst =e.Message;
}
return strRst;
}
// 恢复指定的服务
public string ResumeService(string serviceName)
{
string strRst = null;
ManagementObject mo = this.managementClass.CreateInstance();
mo.Path = new ManagementPath(this.strPath+".Name=""+serviceName+""");
try
{
//判断是否可以恢复
if((bool)mo["acceptPause"]&&(string)mo["State"]=="Paused")
mo.InvokeMethod("ResumeService",null);
}
catch(ManagementException e)
{
strRst =e.Message;
}
return strRst;
}
// 停止指定的服务
public string StopService(string serviceName)
{ string strRst = null;
ManagementObject mo = this.managementClass.CreateInstance();
mo.Path = new ManagementPath(
this.strPath+".Name=""+serviceName+""");
try
{
//判断是否可以停止
if((bool)mo["AcceptStop"])//(string)mo["State"]=="Running"
mo.InvokeMethod("StopService",null);
}
catch(ManagementException e)
{
strRst =e.Message;
}
return strRst;
}
}
}在Win32ServiceManager中通过RemoteConnectValidate静态方法来测试连接成功与否；另外提供了GetServiceValue方法和GetServiceList方法以及它的重载来获取服务信息；后面的四个方法就是对服务的状态控制了。