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Use WCF service in Xamarin Cross Platform application

I created a WCF service that retrieves data from an SQL database and can update and modify data in an SQL database. I am trying to call WCF methods from xamarin for android and xamarin for iOS. I searched alot for an example of how to call the PUT and POST method from the WCF service via xamarin for android and xamarin for iOS, but no luck. I added the WCF code below for reference .... even the web API created, but all the examples and guides for using the web API are ways to call the GET method. I do not see any help document that shows how to call the PUT or Post method from WCF or Web api through the cross-platform. I tested the WCF service through Fiddler and worked fine. What will be the next step. I created a proxy for this web service using SlsvcUtil.exe, as indicated in the xamarin documentation. Can someone send one example of xamarin.Android, which will call the update or delete method from below the wcf.Desperately service is looking for help.Service contains the webHttp binding.

FOS

Service1.svc.cs

using System; using System.Collections.Generic; using System.Linq; using System.Runtime.Serialization; using System.ServiceModel; using System.ServiceModel.Web; using System.Text; public class Service1 : IService1 { public List GetDeptsList() { using (DeptDBEntities entities = new DeptDBEntities()) { return entities.Depts.ToList(); } } public Dept GetDeptByID(string no) { try { int deptId = Convert.ToInt32(no); using (DeptDBEntities entities = new DeptDBEntities()) { return entities.Depts.SingleOrDefault(dept => dept.no == deptId); } } catch { throw new FaultException("Something went wrong"); } } public void AddDept(string name) { using (DeptDBEntities entities = new DeptDBEntities()) { Dept dept = new Dept { name = name }; entities.Depts.Add(dept); entities.SaveChanges(); } } public void UpdateDept(string no, string name) { try { int deptId = Convert.ToInt32(no); using (DeptDBEntities entities = new DeptDBEntities()) { Dept dept = entities.Depts.SingleOrDefault(b => b.no == deptId); dept.name = name; entities.SaveChanges(); } } catch(Exception e) { throw new FaultException(e.Message); } } public void DeleteDept(string no) { try { int deptId = Convert.ToInt32(no); using (DeptAppDBEntities entities = new DeptAppDBEntities()) { Dept dept = entities.Depts.SingleOrDefault(b => b.no == deptId); entities.Depts.Remove(dept); entities.SaveChanges(); } } catch { throw new FaultException("Something went wrong"); } } }

web.config

  <?xml version="1.0"?> <configuration> <configSections> <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/> </configSections> <system.web> <compilation debug="true" targetFramework="4.0"> <assemblies> <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/> </assemblies> </compilation> <pages controlRenderingCompatibilityVersion="4.0"/> </system.web> <system.serviceModel> <serviceDebug includeExceptionDetailInFaults="false" /> </behavior> </serviceBehaviors> </behaviors> <services> <service name="WcfWithJsonP.Service1" behaviorConfiguration="restfulBehavior"> <endpoint address="" behaviorConfiguration="webBehavior" binding="webHttpBinding" bindingConfiguration="" contract="WcfWithJsonP.IService1"/> <host> <baseAddresses> <add baseAddress="http://localhost/Service1"/> </baseAddresses> </host> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> </services> <behaviors> <endpointBehaviors> <behavior name="webBehavior"> <webHttp defaultOutgoingResponseFormat="Json"/> </behavior> </endpointBehaviors> <serviceBehaviors> <behavior name="restfulBehavior"> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> </behaviors> <serviceHostingEnvironment multipleSiteBindingsEnabled="true"/> </system.serviceModel> <system.webServer> <modules runAllManagedModulesForAllRequests="true"/> <directoryBrowse enabled="true"/> </system.webServer> <entityFramework> <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework"> <parameters> <parameter value="v12.0"/> </parameters> </defaultConnectionFactory> </entityFramework> </configuration
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Main.axml for

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" android:minWidth="25px" android:minHeight="25px"> <LinearLayout android:orientation="vertical" android:layout_width="134.1dp" android:layout_height="fill_parent" android:minWidth="25px" android:minHeight="25px"> <TextView android:text="Enter No:" android:textAppearance="?android:attr/textAppearanceSmall" android:layout_width="163.4dp" android:layout_height="wrap_content" android:id="@+id/No" android:layout_marginBottom="27.5dp" android:layout_marginTop="0.0dp" android:layout_marginLeft="5dp" /> <TextView android:text="Enter name:" android:textAppearance="?android:attr/textAppearanceSmall" android:layout_width="252.7dp" android:layout_height="wrap_content" android:id="@+id/Name" android:layout_marginBottom="27.5dp" android:layout_marginTop="0.0dp" android:layout_marginLeft="5dp" android:enabled="false" android:visibility="invisible" /> </LinearLayout> <Button android:id="@+id/Get" android:layout_width="fill_parent" android:layout_height="36.6dp" android:text="Get" /> <Button android:id="@+id/ADD" android:layout_width="fill_parent" android:layout_height="36.6dp" android:text="ADD" /> <Button android:id="@+id/Update" android:layout_width="fill_parent" android:layout_height="36.6dp" android:text="Update" /> <Button android:id="@+id/Delete" android:layout_width="fill_parent" android:layout_height="36.6dp" android:text="Delete" /> <TextView android:text="" android:textAppearance="?android:attr/textAppearanceSmall" android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/ValueNo" android:layout_marginBottom="27.5dp" android:layout_marginTop="0.0dp" android:background="@android:color/holo_purple" /> <TextView android:text="" android:textAppearance="?android:attr/textAppearanceSmall" android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/ValueName" android:layout_marginBottom="27.5dp" android:layout_marginTop="0.0dp" android:background="@android:color/holo_purple" /> </LinearLayout>
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2 answers

Here is a simple snippet of code to use as a guide:

 //first at the class level, create a private variable for the client. private Service1Client _client; private Button _addButon; private TextView _txtDeptName; //Initialize the _client in the OnCreate() method. protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); var endpoint = new EndpointAddress("http://<ipAddress:port>/Service1.svc"); var binding = new BasicHttpBinding{ Name = "basicHttpBinding", MaxBufferSize = 2147483647, MaxReceivedMessageSize = 2147483647 }; TimeSpan timeout = new TimeSpan(0, 0, 30); binding.SendTimeout = timeout; binding.OpenTimeout = timeout; binding.ReceiveTimeout = timeout; _client = new Service1Client(binding, endpoint); _client.AddDeptCompleted += ClientAddDeptCompleted; _addButton = FindViewById<Button>(Android.Resources.Id.Add); _addbutton.Click += AddButton_Clicked; _txtDeptName = FindViewbyId<TextView>(Android.Resources.Id.Name); } //Then within the event handlers, do something like this public void AddButton_Clicked(object sender, EventArgs e) { _client.AddDeptAsync(_txtDeptName.Text); } //Handle the request completed event. private void ClientAddDeptCompleted(object sender, AddDeptCompletedEventArgs addDeptCompletedEventArgs) { //TODO: Something with the notification that the request has completed. }

You should also follow a similar pattern for other buttons and service calls. Sorry if I made some typos. I am moving from a bit of memory and some WCF instructions to the Xamarin site.

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First you must add the service to your project. You can do this using the following command:

Cd C: \ Program Files (x86) \ Microsoft SDK \ Silverlight \ v5.0 \ Tools \ SlSvcUtil.exe http: // localhost: 2323 / HisDashboardService / ProfilerService.svc / directory: "C: \ Folder"

Then add to the created project file. To use the added service, perform the following procedure.

 public class ServiceAccessor { static string serviceUrl = "http://172.16.12.17:7698/HisDashboardService/"; public static readonly EndpointAddress ProfilerServiceEndPoint = new EndpointAddress(serviceUrl + "ProfilerService.svc"); private ProfilerServiceClient _profilerServiceClient; private static ServiceAccessor _instanceServiceAccessor; public static ServiceAccessor Instance { get { return _instanceServiceAccessor ?? (_instanceServiceAccessor = new ServiceAccessor()); } } ServiceAccessor() { InitializeServiceClient(); } private void InitializeServiceClient() { BasicHttpBinding binding = CreateBasicHttp(); #region ProfilerService _profilerServiceClient = new ProfilerServiceClient(binding, ProfilerServiceEndPoint); #endregion ProfilerService } private static BasicHttpBinding CreateBasicHttp() { BasicHttpBinding binding = new BasicHttpBinding { Name = "basicHttpBinding", MaxBufferSize = 2147483647, MaxReceivedMessageSize = 2147483647 }; TimeSpan timeout = new TimeSpan(1, 0, 0); binding.SendTimeout = timeout; binding.OpenTimeout = timeout; binding.ReceiveTimeout = timeout; return binding; } }
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Source: https://habr.com/ru/post/975040/

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