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Asked: 2026-05-10T14:40:44+00:00

I’ve created a webservice and when I want to use its methods I instantiate

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I’ve created a webservice and when I want to use its methods I instantiate it in the a procedure, call the method, and I finally I dispose it, however I think also it could be okay to instantiate the webservice in the ‘private void Main_Load(object sender, EventArgs e)’ event.

The thing is that if I do it the first way I have to instantiate the webservice every time I need one of its methods but in the other way I have to keep a webservice connected all the time when I use it in a form for example.

I would like to know which of these practices are better or if there’s a much better way to do it

Strategy 1

private void btnRead_Click(object sender, EventArgs e) {     try     {         //Show clock         this.picResult.Image = new Bitmap(pathWait);          Application.DoEvents();          //Connect to webservice         svc = new ForPocketPC.ServiceForPocketPC();         svc.Credentials = new System.Net.NetworkCredential(Settings.UserName, Settings.Password);         svc.AllowAutoRedirect = false;         svc.UserAgent = Settings.UserAgent;         svc.PreAuthenticate = true;         svc.Url = Settings.Url;         svc.Timeout = System.Threading.Timeout.Infinite;          svc.CallMethod();          ...     }     catch (Exception ex)     {         ShowError(ex);     }     finally     {         if (svc != null)             svc.Dispose();     } }

Strategy 2

private myWebservice svc;  private void Main_Load(object sender, EventArgs e) {     //Connect to webservice     svc = new ForPocketPC.ServiceForPocketPC();     svc.Credentials = new System.Net.NetworkCredential(Settings.UserName, Settings.Password);     svc.AllowAutoRedirect = false;     svc.UserAgent = Settings.UserAgent;     svc.PreAuthenticate = true;     svc.Url = Settings.Url;     svc.Timeout = System.Threading.Timeout.Infinite; }  private void btnRead_Click(object sender, EventArgs e) {     try     {         //Show clock         this.picResult.Image = new Bitmap(pathWait);          Application.DoEvents();         svc.CallMethod();          ...     }     catch (Exception ex)     {         ShowError(ex);     } }  private void Main_Closing(object sender, CancelEventArgs e) {     svc.Dispose(); }
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1 Answer

  1. It depends on how often you are going to be calling the web service. If you’re going to be calling it almost constantly, it would probably be better to use method #2. However, if it’s not going to be getting called quite so often, you are better off using method #1, and only instantiating it when you need it.

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