Windows service with timer

Question

I have created a windows service with timer in c  net  it works fine while i debug build the project in visual studio but it does not perform its operation after installation   What might be the reason behind this    code       public partial class Service1   ServiceBase           FileStream fs          StreamWriter m streamWriter          Timer tm   new Timer             public Service1                         InitializeComponent                 this ServiceName    timerservice                tm Interval   2000              tm Tick    new EventHandler PerformOperations               tm Start                 fs   new FileStream   c  mcWindowsService txt   FileMode OpenOrCreate  FileAccess Write                m streamWriter   new StreamWriter fs               m streamWriter BaseStream Seek 0  SeekOrigin End                      private void PerformOperations object sener  EventArgs e                          StreamWriter swr   new StreamWriter  c   test from database txt  true                try                               OdbcConnection con   new OdbcConnection  DSN liquor data                     OdbcDataAdapter adp   new OdbcDataAdapter     con                    DataSet ds   new DataSet                     string sql    select   from item group                   adp SelectCommand CommandText   sql                   adp Fill ds   item group                     foreach  DataRow dr in ds Tables  item group   Rows                                                swr Write dr  group name   ToString       t t    DateTime Now TimeOfDay ToString       n                           Console WriteLine dr  group name   ToString       t t    DateTime Now TimeOfDay ToString       n                        m streamWriter WriteLine dr  group name   ToString       t t    DateTime Now TimeOfDay ToString       n                                       m streamWriter Flush                               catch  Exception ex                                   swr Write  Error     ex Message     t t    DateTime Now TimeOfDay ToString       n

User · Answer

You need to put your main code on the OnStart method   This other SO answer of mine might help   You will need to put some code to enable debugging within visual-studio while maintaining your application valid as a windows-service  This other SO thread cover the issue of debugging a windows-service   EDIT   Please see also the documentation available here for the OnStart method at the MSDN where one can read this      Do not use the constructor to perform processing that should be in   OnStart  Use OnStart to handle all initialization of your service  The   constructor is called when the application s executable runs  not when   the service runs  The executable runs before OnStart  When you   continue  for example  the constructor is not called again because the   SCM already holds the object in memory  If OnStop releases resources   allocated in the constructor rather than in OnStart  the needed   resources would not be created again the second time the service is   called

User · Answer

First approach with Windows Service is not easy    A long time ago  I wrote a C  service   This is the logic of the Service class  tested  works fine    namespace MyServiceApp       public class MyService   ServiceBase               private System Timers Timer timer           protected override void OnStart string   args                        this timer   new System Timers Timer 30000D       30000 milliseconds   30 seconds             this timer AutoReset   true              this timer Elapsed    new System Timers ElapsedEventHandler this timer Elapsed               this timer Start                       protected override void OnStop                         this timer Stop                this timer   null                     private void timer Elapsed object sender  System Timers ElapsedEventArgs e                        MyServiceApp ServiceWork Main       my separate static method for do work                    public MyService                         this ServiceName    MyService                         service entry point         static void Main                         System ServiceProcess ServiceBase Run new MyService                         I recommend you write your real service work in a separate static method  why not  in a console application   just add reference to it   to simplify debugging and clean service code   Make sure the interval is enough  and write in log ONLY in OnStart and OnStop overrides   Hope this helps

User · Answer

Here s a working example in which the execution of the service is started in the OnTimedEvent of the Timer which is implemented as delegate in the ServiceBase class and the Timer logic is encapsulated in a method called SetupProcessingTimer      public partial class MyServiceProject  ServiceBase    private Timer  timer   public MyServiceProject         InitializeComponent       private void SetupProcessingTimer          timer   new Timer         timer AutoReset   true      double interval   Settings Default Interval       timer Interval   interval   60000       timer Enabled   true       timer Elapsed    new ElapsedEventHandler OnTimedEvent      private void OnTimedEvent object source  ElapsedEventArgs e           begin your service work     MakeSomething       protected override void OnStart string   args        SetupProcessingTimer               The Interval is defined in app config in minutes    lt userSettings gt       lt MyProject Properties Settings gt           lt setting name  Interval  serializeAs  String  gt               lt value gt 1 lt  value gt           lt  setting gt       lt  MyProject Properties Settings gt   lt  userSettings gt

[c#] Windows service with timer

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