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    • 使用C#控制远程计算机的服务

          在.net中提供了一些类来显示和控制Windows系统上的服务,并可以实现对远程计算机服务服务的访问,如System.ServiceProcess命名空间下面的ServiceController 类,System.Management下面的一些WMI操作的类。虽然用ServiceController可以很方便的实现对服务的控制,而且很直观、简洁和容易理解。但是我认为他的功能同通过WMI来操作服务相比,那可能就有些单一了,并且对多个服务的操作可能就比较麻烦,也无法列出系统中的所有服务的具体数据。这里要讲的就是如何使用System.Management组件来操作远程和本地计算机上的服务。

              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,

      C#中在应用程序和DLL使用消息
      用C#实现全屏幕截图,.Net网站独立配置文件读写方案,SmartSoft中用C#.Net实现AutoCAD块属性提取,.NET组件和COM组件之间的相互操作,.net中前台javascript与后台c#相互调用,正确理解C#中的ref关键字,Visual C#2005中使用正则表达式,实例:用Visual C#制作新闻阅读器,病毒及流氓软件自我复制的简单实现(C#),在.NET中使用域对象持续模式,汇总c#.net常用函数和方法集,C#开发的两个原则的深入讨论,c#.net常用函数列表,在C#程序设计中使用Win32类库,用C#轻松在DOTNET中实现缩略图,使用C#编写的一个定时关机程序,深入理解C#编程中的组件-事件-委托,通过Visual C#.NET建一个DTS任务,用C#的Raw Socket实现网络封包监视,利用C#实现标准的 Dispose模式
      Visual C#

      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.Length>0)

                    {

                         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;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。

           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().Length>0)

                    {

                         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;i<services.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\root\cimv2: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。

      得到系统进程和结束某个指定的进程
      用C#实现全屏幕截图,.Net网站独立配置文件读写方案,SmartSoft中用C#.Net实现AutoCAD块属性提取,.NET组件和COM组件之间的相互操作,.net中前台javascript与后台c#相互调用,正确理解C#中的ref关键字,Visual C#2005中使用正则表达式,实例:用Visual C#制作新闻阅读器,病毒及流氓软件自我复制的简单实现(C#),在.NET中使用域对象持续模式,汇总c#.net常用函数和方法集,C#开发的两个原则的深入讨论,c#.net常用函数列表,在C#程序设计中使用Win32类库,用C#轻松在DOTNET中实现缩略图,使用C#编写的一个定时关机程序,深入理解C#编程中的组件-事件-委托,通过Visual C#.NET建一个DTS任务,用C#的Raw Socket实现网络封包监视,利用C#实现标准的 Dispose模式
      Visual C#

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