C#

1 public partial class myService : ServiceBase   
2   
3     {   
4   
5         //Initialize an instance of Timer   
6   
7         System.Threading.Timer timer;   
8   
9          public myService()   
10   
11         {               
12          InitializeComponent();    
13         }   
14   
15          protected override void OnStart(string[] args)   
16   
17         {   
18   
19             try  
20   
21             {   
22   
23                 //Service Start Time read from app.config    
24   
25                 string startTimeString = ConfigurationSettings.AppSettings           ["StartTime"].ToString();   
26   
27                 //value to pass to callback function   
28   
29                 DateTime startTime;   
30   
31                 //how long to delay in milliseconds before calling the method   
32   
33                 int millisecondsToStart = 0;   
34     
35                 if (DateTime.TryParseExact(startTimeString, "HHmm", CultureInfo.InvariantCulture, DateTimeStyles.None, out startTime))   
36   
37                 {   
38   
39                     if (DateTime.Now > startTime)   
40   
41                         startTime = startTime.AddDays(1);   
42   
43                     millisecondsToStart = (int)startTime.Subtract(DateTime.Now).TotalMilliseconds;   
44   
45                 }   
46     
47                 timer = new System.Threading.Timer(OnElapsedTime, null, millisecondsToStart, Convert.ToInt32(ConfigurationSettings.AppSettings["intervalTime"]));   
48   
49   
50             }   
51   
52             catch (Exception ex)   
53   
54             {   
55   
56                 //write exception to Event Log   
57   
58                 System.Diagnostics.EventLog.WriteEntry("error in starting my Service", ex.Message + Environment.NewLine + ex.StackTrace);   
59   
60             }   
61   
62         }   
63   
64     
65   
66         protected override void OnStop()   
67   
68         {   
69   
70             //Nothing to do here   
71   
72         }   
73   
74          private void OnElapsedTime(object source)   
75   
76         {   
77   
78             //Call the method   
79   
80             TransferData();   
81         }