Question

Im having a problem installing my service application. When I’m running my debug mode it all works correctly and all the logical stuff works. I’ve written service applications before and comparing the two there is little difference between this one and a working one. Thanks in advance for any help on my code:

 class MainClass : ServiceBase
{
    ABCSQLCon _SQLCon = new ABCSQLCon();
    private int cycleTime = 0;

    private delegate void processError(String errorMessage);

    static void Main(string[] args)
    {
        #if(!DEBUG)
            ServiceBase.Run(new MainClass());
        #else
            MainClass service = new MainClass();
            service.OnStart(new string[0]);
        #endif
    }

    protected override void OnStart(string[] args)
    {
        addToLog("Testing SQL Connection...", "Log");
        cycleTime = _SQLCon.sleepTime;
        addToLog("Sleep Time has been set...", "Log");
        if (_SQLCon.testSQLConnection())
        {
            addToLog("Connection to SQL Database succeeded", "Log");
           // queryThread();

            //not neccessary to make applicated multithreaded yet.
            addToLog("Starting Query Thread...", "Log");
            ThreadStart queryCycle = new ThreadStart(queryThread);
            Thread qThread = new Thread(queryCycle);
            qThread.Start();
        }
    }

    private void startProgram()
    {
    }

    protected override void OnStop()
    {
        base.OnStop();
    }

    public MainClass()
    {
        this.ServiceName = "ABCSQL Engine";
    }

Ah I found the problem now, the sql connection test was just a quick open and close job but what I didn’t see or realise was where I was initializing that _SQLCON object.
I’ve moved that to my method and works fine now. Happy days, thanks for the answers as it helped me look in the place I wasnt looking. x

Answer 1

It is a best practise to call to methods on a different thread then the service thread to avoid the blocking of the service thread

public void MyMethod()
{
        addToLog("Testing SQL Connection...", "Log");
        cycleTime = _SQLCon.sleepTime;
        addToLog("Sleep Time has been set...", "Log");
        if (_SQLCon.testSQLConnection())
        {
            addToLog("Connection to SQL Database succeeded", "Log");
           // queryThread();

            //not neccessary to make applicated multithreaded yet.
            addToLog("Starting Query Thread...", "Log");
            ThreadStart queryCycle = new ThreadStart(queryThread);
            Thread qThread = new Thread(queryCycle);
            qThread.Start();
        }

}

 private Thread _myThread;
 protected override void OnStart(string[] args)
{
        ThreadStart threadStart = MyMethod;
         _myThread = new Thread(threadStart);
         _myThread.Start();
}