Question

我在Visual Studio 2012中创建了一个WCF服务，我打算在Xamarin中使用它，并将用户注册信息保存到SQL Server中的表中。在Visual Studio中调试时，该服务工作正常，数据条目实际上保存在SQL中的表中。我想在Xamarin中使用该服务，这是我的代码：

     using System;
     using System.Collections.Generic;
     using System.Data;
     using System.Data.SqlClient;
     using System.Linq;
     using System.Runtime.Serialization;
     using System.ServiceModel;
     using System.ServiceModel.Web;
     using System.Text;
     using ItusService;


     using Android.App;
     using Android.Locations;
     using Android.OS;
     using Android.Util;
     using Android.Widget;

     //some code here...

     public static readonly EndpointAddress EndPoint = new EndpointAddress("http://192.168.1.155:12100/Service1.svc");

     private Service1Client service;

     protected override void OnCreate (Bundle bundle)
     {
         //some code here...
         InitializeService1Client();
     }
     private void InitializeService1Client()
    {
        BasicHttpBinding binding = new BasicHttpBinding ();
        service = new Service1Client(binding, EndPoint);
    }
    async void AddressButton_OnClick(object sender, EventArgs eventArgs)
    {
        //some code here...
        UserLocation useraddress = new UserLocation ();
        useraddress.ClientID = _client.Text = "ddsdfs";
        useraddress.FullName = _name.Text = "dsffdf";
        useraddress.LocationCoordinates = _locationText.Text;
        useraddress.LocationAddress = _addressText.Text;
        useraddress.DistressTime = _time.Text = "djdsk";
        string result = service.ToString ();
        _resultTxt.Text = result;
    }

我不知道是否有遗漏的东西，因为我的Android设备没有将任何内容保存到我的SQL表中。我使用模拟器和我的设备进行调试，两者都没有保存。我打开了端口进行收听，我根据Xamarin演练使用silverlight slsvc工具创建了一个参考文件http://developer.xamarin.com/guides/cross-platform/application_fundamentals/web_services/walkthrough_working_with_WCF/我尽我所能尝试了一切。请帮忙。

Answer 1

调用WCF方法的一般模式是这样的（这是一般的WCF，实际上与Xamarin或Android无关）

// create the client and bind it
client = new ServiceClient(binding, endpoint);

// specify the callback
client.GetLocationCompleted += OnGetLocationCompleted;

// make the request to your method, passing any required parameters
client.GetLocationAsync(useraddress);

因为WCF调用是异步的，所以需要提供一个回调方法（EventArgs类的命名取决于你的服务定义方式）

public void OnGetLocationCompleted(object sender, GetLocationCompletedEventArgs args) {

  // if something bad happend, args.Error will contain an exception
  // otherwise args.Result will contain any return value from you method

}

WCF服务正在调试但在从android

1 个答案: