Consume a Web Service in an Android application with C# MonoAnDroid application


In this application I will describe how to consume a web service in your MonoDroid application using VS 2010. (MonoDroid will not work in VS 2010 Express edition).

To install MonoDroid navigate to

Follow the instructions and download all the necessary files.

Figure 1.


In the Figure 1. I have created a new MonoDroid application named monoAndroidapplication.


Now Like Figure 2 go to Project -> Add Web Reference. Enter in the URL of your web service and click Add Reference I will consume a webservice ( which will add 2 values and will display. In this webservice you can also perform division and multiplication.

Now In the Activity.cs file you have to write the code below.

using System;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;

namespace MonoAndroidApplicationListView
    [Activity(Label = "MonoAndroidApplicationListView", MainLauncher = true)]
    public class Activity1 : Activity
        int count = 1;

        protected override void OnCreate(Bundle bundle)

            // Set our view from the "main" layout resource

            // Get our button from the layout resource,
            // and attach an event to it
// Create a new Button and set it as our view  

            //Button button = FindViewById<Button>(Resource.Id.MyButton);
            Button button = new Button(this);  
            button.Text = "Consume!";
            button.Click += button_Click;


            //button.Click += delegate { button.Text = string.Format("{0} clicks!", count++); };
        private void button_Click(object sender, System.EventArgs e)
            // Create our web service and use it to add 2 numbers  
            var ws = new Calculator();
            var result = ws.add(25, 10);

            // Show the result in a toast  
            Toast.MakeText(this, result.ToString(), ToastLength.Long).Show();


Now in the figure below you will see the web service marked in red.


Run the Code by pressing F5 and you will see the result.


Note: Web services take time to access. Consider running them in a background thread. So be patient.