Xamarin.Forms - Bing Web Search Using Cognitive Service

In this blog post, you will learn how to Search web pages using Cognitive Service in Xamarin forms.

Introduction

Xamarin.Forms code runs on multiple platforms - each of which has its own filesystem. This means that reading and writing files is most easily done using the native file APIs on each platform. Alternatively, embedded resources are a simpler solution to distribute data files with an app.

Cognitive Services

Xamarin and Cognitive Services together can infuse your apps, websites, and bots with intelligent algorithms to see, hear, speak, understand and interpret your user needs through natural methods of communication. Also, they help you transform your business with AI today.

Use AI to solve business problems

• Vision
• Speech
• Knowledge
• Search
• Language

Bing Web Search

1. Bing Web Search API is a RESTful service that provides an experience similar to Bing by returning search results that Bing determines are relevant to a user's questions. Search results are easily configured to include web pages, images, videos, news, translations, and more. 
2. Bing Web Search API is easy to call from any programming language that can make HTTP requests and parse JSON responses 

Prerequisites

• Visual Studio 2017 or Later(Windows or Mac)
• Bing Search API Key

Setting up a Xamarin.Forms Project

Start by creating a new Xamarin.Forms project. You’ll learn more by going through the steps yourself.

Visual studio 2019 have more option in the opening window. Clone or checkout code from any repository or, open project or solution for your computer.
Now you can click create a new project

Now filter by Project Type: Mobile
Choose the Mobile App (Xamarin. forms) project under C# and Mobile.

Name your app, You probably want your project and solution to use the same name as your app. Put it in your preferred Location for projects and click Create.

Now, Select the Blank App and target Platform both Android, iOS and Windows (UWP).

Subsequently, go to the solution. In there, you get all the files and sources of your project (.NET Standard). Now, select XAML page and double-click to open the MainPage.Xaml page.

You now have a basic Xamarin.Forms app. Click the Play button to try it out.

Get Bing Search API Key

In this step, get Bing Search API Key. Go to the following link.

https://azure.microsoft.com/en-in/services/cognitive-services/

Click "Try Cognitive Services for free".

Now, you can choose Bing Search APIs under Search APIs. Afterward, click "Get API Key".

Read the terms, and select your country/region. Afterward, click "Next".

Now, log in using your preferred account.

Now, the API Key is activated. You can use it now.
Note: The trial key is available only 7 days.

Setting up the User Interface

Go to MainPage.Xaml and write the following code.

MainPage.xaml

Click the play button to try it out.

NuGet Packages

Now, add the following NuGet Packages.

1. Newtonsoft.Json

Add Newtonsoft.Json NuGet

Go to Solution Explorer and select your solution. Right-click and select "Manage NuGet Packages for Solution". Search "Newtonsoft.Json" and add Package. Remember to install it for each project (.NET Standard, Android, iO, and UWP).

Create a Model

In this step, you can create a model for Deserializing your response.

ResponseModel.cs

Bing Web Search In this step, write the following code for Bing Web Search. MainPage.xaml.cs
Click the Play button to try it out. Android

UWP

I hope you have understood how to Search web pages using Cognitive Service Bing Search API in Xamarin.Forms. Thanks for reading. Please share comments and feedback. Happy Coding 😃