一个简单的windows services demo(c#)

功能:
每三十分钟扫描进程,若是不存在进程fromdemo.exe.则启动该应用程序.
1.检测进程进否存在

代码
///
<summary>
///检查进程是否已启动
///
</summary>
///
<param name="processName"></param>
///
<returns></returns>

  private static bool IsExistProcess(string processName)
        {
            Process[] MyProcesses = Process.GetProcessesByName(processName);
            if (MyProcesses != null && MyProcesses.Length > 0)
            {
                return true;
            }
            return false;
        }


2.建一个windows services 工程,添加一个System.Timers.Timer来使用.
  // Create a timer with a 60*5 second interval.
  aTimer = new System.Timers.Timer(60000*30);
  aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
  aTimer.Enabled = true;
  在OnTimedEvent里写要处理的内容.

代码if(!IsExistProcess("FormDemo"))
            {
              Process p=
newProcess();
stringlocation=System.Reflection.Assembly.GetExecutingAssembly().Location;
stringdir=location.Substring(0, location.LastIndexOf("\\")+
1);
                    p.StartInfo.FileName=dir+
"FormDemo.exe";
                    p.Start();
                }
　　　　　　　}


3.添加安装程序.我使用localsystem使用户,自动启动
在ServiceProcessInstaller的onCommited事件里设置服务能够与桌面交互,不然会看不到界面,虽然进程里面会有.

代码
//容许桌面交互

private
voidserviceProcessInstaller_Committed(objectsender, InstallEventArgs e)
        {
try
            {
                ConnectionOptions myConOptions=
newConnectionOptions();
                myConOptions.Impersonation=ImpersonationLevel.Impersonate;
                ManagementScope mgmtScope=
newSystem.Management.ManagementScope(@"root\CIMV2", myConOptions);
                mgmtScope.Connect();
                ManagementObject wmiService=
newManagementObject("Win32_Service.Name='"
+serviceInstaller.ServiceName+
"'");
                ManagementBaseObject InParam=wmiService.GetMethodParameters("Change");
                InParam["DesktopInteract"]=
true;
                ManagementBaseObject OutParam=wmiService.InvokeMethod("Change", InParam,null);

#regionWindows服务安装后自动启动   
                    Process p=
newProcess();   
                    p.StartInfo.FileName=
"cmd.exe";   
                    p.StartInfo.UseShellExecute=
false;   
                    p.StartInfo.RedirectStandardInput=
true;   
                    p.StartInfo.RedirectStandardOutput=
true;   
                    p.StartInfo.RedirectStandardError=
true;   
                    p.StartInfo.CreateNoWindow=
true;   
                    p.Start();
stringCmdstring=
"net start"
+serviceInstaller.ServiceName;  
                    p.StandardInput.WriteLine(Cmdstring);   
                    p.StandardInput.WriteLine("exit");  
#endregion


            }
catch
            {
                EventLog.WriteEvent("test failer",null,null,null);
            }

        }



第一次我使用安装项目进行安装,没有顺利进行,后来改成批处理了,直接把对应版本的installutil.exe拷由到服务所在路径,而后
installutil /i  myservice.exe
net start myservice
pause