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+"\root\cimv2:Win32_Service";
this.managementClass = new ManagementClass(strPath);
if(userName!=null&&userName.Length0)
{
ConnectionOptions connectionOptions = new ConnectionOptions();
connectionOptions.Username = userName;
connectionOptions.Password = password;
ManagementScope managementScope = new ManagementScope( "\\" +host+ "\root\cimv2",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+ "\root\cimv2",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;iserverNames.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。
下面建立一个简单的窗口来使用它。
大致的界面如下:
通过vs.net 2003可以很快做出上面的窗体,下面列出了一些增加的代码:
using ZZ.Wmi;
namespace ZZForm
{
public class Form1 : System.Windows.Forms.Form
{
//……
private Win32ServiceManager serviceManager;
public Form1()
{
InitializeComponent();
this.serviceManager = null;
}
//……
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
//修改服务状态
private void buttonChangeState_Click(object sender, System.EventArgs e)
{
switch(((Button)sender).Text)
{
case "启动":
string startRst = this.serviceManager.StartService(this.listViewService.SelectedItems[0].SubItems[0].Text);
if(startRst==null)
MessageBox.Show("操作成功,请点击获取刷新按钮刷新结果!");
else
MessageBox.Show(startRst);
break;
case "暂停":
string startPause = this.serviceManager.PauseService(this.listViewService.SelectedItems[0].SubItems[0].Text);
if(startPause==null)
MessageBox.Show("操作成功,请点击获取刷新按钮刷新结果!");
else
MessageBox.Show(startPause);
break;
case "继续":
string startResume = this.serviceManager.ResumeService(this.listViewService.SelectedItems[0].SubItems[0].Text);
if(startResume==null)
MessageBox.Show("操作成功,请点击获取刷新按钮刷新结果!");
else
MessageBox.Show(startResume);
break;
case "停止":
string startStop = this.serviceManager.StopService(this.listViewService.SelectedItems[0].SubItems[0].Text);
if(startStop==null)
MessageBox.Show("操作成功,请点击获取刷新按钮刷新结果!");
else
MessageBox.Show(startStop);
break;
}
}
//获取和刷新数据
private void buttonLoadRefresh_Click(object sender, System.EventArgs e)
{
if(this.textBoxHost.Text.Trim().Length0)
{
if(this.textBoxHost.Text.Trim()==".")
{
this.serviceManager = new Win32ServiceManager();
}
else
{
if(Win32ServiceManager.RemoteConnectValidate(this.textBoxHost.Text.Trim(),this.textBoxName.Text.Trim(),this.textBoxPassword.Text.Trim()))
{
this.serviceManager = new Win32ServiceManager(this.textBoxHost.Text.Trim(),this.textBoxName.Text.Trim(),this.textBoxPassword.Text.Trim());
}
else
{
MessageBox.Show("连接到远程计算机验证错误.");
return;
}
}
string [,] services = serviceManager.GetServiceList();
this.listViewService.BeginUpdate();
this.listViewService.Items.Clear();
for(int i=0;iservices.GetLength(0);i++)
{
ListViewItem item = new ListViewItem(new string[]{services[i,0],services[i,1],services[i,2],services[i,3]});
this.listViewService.Items.Add(item);
}
this.listViewService.EndUpdate();
}
else
MessageBox.Show("请输入计算机名或IP地址");
}
}
}
说明,其实一个服务的属性和方法除了上面这几个还有很多,我们可以通过实例化ManagementClass类,使用它的Properties属性和Methods属性列出所有的属性和方法。上面的Win32ServiceManager中生成的每个服务实例都是ManagementObejct类型的,其实还有一种强类型的类,可以通过编程和工具来生成。
总结,通过引用System.Management命名空间,上面简单的实现了通过访问rootcimv2:Win32_Service名称空间对服务进行显示和操作。此外,我们还可以通过访问其他名称空间来访问计算机的一些硬件信息,软件信息以及网络等,有兴趣的读者可以研究一下。 猜你喜欢