Introduction to the JavaScript service called in ASP. NET Ajax

Now, we can use the HelloWorldService as we are currently using. Below, I provide a clear sample code. The ScriptManager label is also displayed. Note that we have added a clientServiceHelper. js file. We placed all JavaScript Functions for client-to-WCF communication in that file.

<Asp: ScriptManager ID="ScriptManager1"Runat="Server"> <Scripts> <Asp: ScriptReference Path="~ /Script/ClientServiceHeler. js" /> </Scripts> <Services> <Asp: ServiceReference Path="~ /ToDoService. svc" /> </Services> </Asp: ScriptManager> In the section of the clientServiceHelper. js file, we use an ASP. NET AJAX Client object model to write JavaScript client code. Type. registerNamespace ("ServiceClients"); ServiceClients. ToDoClient= Function(){ } ServiceClients. ToDoClient. prototype={ AddToDo:Function(Todo, callback, errorCallBack ){ ServiceLibrary. IToDoService. AddToDo (todo, callback, errorCallBack ); }, DeleteToDo:Function(Todo, callback, errorCallBack ){ ServiceLibrary. IToDoService. DeleteToDo (todo, callback, errorCallBack ); }, UpdateToDo:Function(Todo, callback, errorCallBack ){ ServiceLibrary. IToDoService. UpdateToDo (todo, callback, errorCallBack ); }, GetAllToDo:Function(Callback, errorCallBack ){ ServiceLibrary. IToDoService. GetAllToDo (callback, errorCallBack ); }, Dispose:Function(){ } } ServiceClients. ToDoClient. registerClass ('ServiceClients. ToDoClient',Null, Sys. IDisposable) If(Typeof(Sys)! = 'Undefined') Sys. Application. policyscriptloaded ();

Summary

In this article, we have learned how to use the Ajax-enabled WCF Service item template. Then, we learned how to use a service interface based on the WCF Service. We also learned how to configure the web. config file to use the service. Finally, we learned how to add a service reference in ScriptManager. We can also add a service reference in the C # code. The sample code is as follows:

ScriptManager manager = ScriptManager.GetCurrent(Page); ServiceReference reference = new ServiceReference("ToDoService.svc"); manager.Services.Add(reference);

1. Use ASP. net ajax to call the WCF Service item Template
2. How Ajax is implemented in ASP. NET
3. Use Ajax and Web Service Development instances of ASP. Net 3.5