Eventlog in vb.net windows service

This article describes an approach to writing to a custom error log and to writing events into the system event log. Error logs are a useful method for collecting all error data generated by an application; this often includes trapped errors that you may not need to or care to show to the end user.

Error logs are most useful during an early or beta release of a product where you have a limited set of users and you have an opportunity to capture the error logs back from these users. The error log class included with this example creates time stamped entries showing the exact method and line of code where the error occurred as well as the error message generated. The event log is a system construct used to capture different types of information regarding the operational status of applications running on a system.

Such log entries are categorized and made visible through the system event viewer console. Event logging is probably a better alternative to error logging in fully fielded systems.

If you take a look at the class library project, you will note that it contains two classes: ErrorLogger. As you can probably guess, ErrorLogger. Open up the ErrorLogger.

Read ' Now we will monitor the new entries that will be written. AddHandler myLog. Message End Sub End Class.

Home Explore Tags Contribute. Home » VB. EventLog Class in VB. Posted in VB. Tags: VB. NET VB. NET How to use. NET using VB. Once the Windows Service is ready to go we need to add the Installer class to our Windows Service as without it, the Windows Service will not install.

Following are the steps to add Installer class. Right Click the Service1. Once the Design View is show, you need to right click and then select Add Installer in the context menu. The above action will add an Installer class named ProjectInstaller. Now you need to open the ProjectInstaller. Designer class and look for InitializeComponent Method. In this method we will modify the ServiceName of the Windows Service and also set its StartType to Automatic, so that along with the computer the Windows Service will start automatically.

ServiceProcessInstaller ;. ServiceInstaller ;. AddRange new System. Private Sub InitializeComponent. AddRange New System. ServiceProcessInstaller1, Me. Making the Windows Service Automatically start after Installation. After the installation one has to start the Windows Service manually through the Services section of My Computer Management. We can start the Windows Service automatically after installation by making use of the AfterInstall event handler which triggers immediately after Windows Service is installed.

You will need to open the ProjectInstaller class and override the AfterInstall event handler and add the code to start the Windows Service. OnAfterInstall savedState ;. ServiceController serviceInstaller1.

Start ;. Public Class ProjectInstaller. Public Sub New. OnAfterInstall savedState. ServiceController ServiceInstaller1. Installing the Windows Service using InstallUtil. Once all the processes are complete, we can now build the Windows Service. Note : Once the Windows Service is ready for deployment, it is recommended to make use of the Release version of the EXE file instead of the Debug version.

Now copy and build the path in a Notepad Text file. Note : I would recommend to build the command in a Notepad and save it somewhere so that you can use it multiple times. InstallUtil Syntax. Note : I am making use of Visual Studio , and hence you need to use the appropriate version installed on your computer.

And make sure you are logged in as Administrator. Without Administrator rights it would not allow you to install the Windows Service. In the command prompt window, copy the InstallUtil command from Notepad and right click in the Command Prompt and click Paste and then press Enter key.

Now the Installer will ask for Logon permissions to run the Windows Service and hence you will need to add Windows Username and Password of user who has appropriate permission. Note : Username must include Domain Name or the Computer name. After successful installation you will see the following message.

You can find the Windows Service in the Services window. In order to open Services window in the Run Command type, services. Uninstalling the Windows Service using InstallUtil. The syntax for uninstalling a Windows Service is very similar to the installation syntax.

After successful uninstallation you will see the following message. Related Articles. Add Comments. Thank you for the feedback. The comment is now awaiting moderation. You will be notified via email when the author replies to your comment. Please select a comment to reply. You can add your comment about this article using the form below.