How to create windows sevice in Dotnet.

How to create windows sevice in Dotnet. Windows service known as NT services enable you to create long-running executable applications that run in its own Windows session, which then has the ability to start automatically when the computer boots and also can be manually paused, stopped or even restarted.

How to create windows sevice in Dotnet.

1) open VS.NET and then at the File menu click on New, Project. From the New Project Dialog Box, choose the Windows service template project and name it MyNewService. The project template automatically adds a component class that is called Service1 by default and inherits from System.ServiceProcess.ServiceBase.

2) Click the designer. Then, in the Properties window, set the ServiceName property for Service1 to MyNewService.

3)Set the Name property to MyNewService. Set the AutoLog property to true.

4)In the code editor, edit the Main method to create an instance of MyNewService. When you renamed the service in step 3, the class name was not modified in the Main method. To access the Main method in VC#, expand the Component Designer generated code region.


      static void Main()
      { 
            System.ServiceProcess.ServiceBase[] ServicesToRun; 
            //Change the following line to match. 

            ServicesToRun = new 
            System.ServiceProcess.ServiceBase[] { new MyNewService() }; 
            System.ServiceProcess.ServiceBase.Run(ServicesToRun);  
       }

5) In the next section, you will add a custom event log to your Windows service. Event logs are not associated in any way with Windows services. Here the EventLog component is used as an example of the type of components you could add to a Windows service.

To add custom event log functionality to your service:

In the Solution Explorer, right-click Service1.vb or Service1.cs and select View Designer.
From the Components tab of the Toolbox, drag an EventLog component to the designer.
In the Solution Explorer, right-click Service1.vb or Service1.cs and select View Code.
Edit the constructor to define a custom event log.

Constructor Code here :


public MyNewService()
{
 
    InitializeComponent()
    if(!System.Diagnostics.EventLog.SourceExists("DoDyLogSourse"))
    System.Diagnostics.EventLog.CreateEventSource("DoDyLogSourse",
                                                          "DoDyLog");

    eventLog1.Source = "DoDyLogSourse";
    // the event log source by which 


    //the application is registered on the computer


    eventLog1.Log = "DoDyLog";
}

6) To define what happens when the service starts, in the code editor, locate the OnStart method that was automatically overridden when you created the project, and write code to determine what occurs when the service begins running:


 protected override void OnStart(string[] args)
{ 
    eventLog1.WriteEntry("my service started"); 
}

7) The OnStart method must return to the operating system once the service's operation has begun. It must not loop forever or block. To set up a simple polling mechanism, you can use the System.Timers.Timer component. In the OnStart method, you would set parameters on the component, and then you would set the Timer.Enabled property to true. The timer would then raise events in your code periodically, at which time your service could do its monitoring.

To define what happens when the service is stopped, in the code editor, locate the OnStop procedure that was automatically overridden when you created the project, and write code to determine what occurs when the service is stopped:


protected override void OnStop()
{ 
    eventLog1.WriteEntry("my service stoped");
}

8) Some custom actions need to occur when installing a Windows service, which can be done by the Installer class. Visual Studio can create these installers specifically for a Windows service and add them to your project. To create the installers for your service.

Return to design view for Service1.
Click the background of the designer to select the service itself, rather than any of its contents.
In the Properties window, click the Add Installer link in the gray area beneath the list of properties. By default, a component class containing two installers is added to your project. The component is named ProjectInstaller, and the installers it contains are the installer for your service and the installer for the service's associated process.
Access design view for ProjectInstaller, and click ServiceInstaller1.
In the Properties window, set the ServiceName property to MyNewService.
Set the StartType property to Automatic.

Timer timer = new Timer(); public ScheduledService() { InitializeComponent(); } protected override void OnStart(string[] args) { TraceService("start web service"); timer.Elapsed += new ElapsedEventHandler(OnElapsedTime); timer.Interval = 60000; timer.Enabled = true; } protected override void OnStop() { timer.Enabled = false; TraceService("stopping service"); } private void OnElapsedTime(object source, ElapsedEventArgs e) { TraceService("Another entry at "+DateTime.Now); } private void TraceService(string content) { FileStream fstream = new FileStream(@"d:\ScheduledService.txt",FileMode.OpenOrCreate, FileAccess.Write); StreamWriter Streawrite1 = new StreamWriter(fstream); Streawrite1.BaseStream.Seek(0, SeekOrigin.End); Streawrite1.WriteLine(content); Streawrite1.Flush(); Streawrite1.Close(); }

How to create windows sevice in Dotnet.

How to create windows sevice in Dotnet.

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