Create new project and select windows service (Visual C# / Windows / Windows Service). Enter the project name, e.g. „MyService“.
View designer of the Service1.cs and click to Add Installer in the Properties window.
Click to serviceInstaller1 and in the Properties window set ServiceName to „MyService“, change DisplayName (shown in Microsoft Management Console) and fill in the Description field. You can also set StartType to automatic or manual service starting.
Click to serviceProcessInstaller1 and change the Account property to a value you need. It's an account under which the system runs the service. Account descriptions can be found in ServiceAccount enumeration.
Complete the implementation of OnStart and OnStop methods in the service class.