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Bing API in Action - C#

, 17 Jul 2009 CPOL
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Short article which explains how to use the Bing API in C#.NET.


According to Bing, "Bing is a search engine that finds and organizes the answers you need so you can make faster, more informed decisions". Microsoft made available its API to public so that we can use it from our own applications. This article explains how to make a sample application which uses a Bing search feature.

Step 1

Even though the Bing API service is free, you need an application ID to use the service. You can create it from here:

An AppID looks like this: F2C2567D3A712A4E764C49473BF4AFF7F8722A4E.

Note: Do not use this as this is a fake AppID. Remember that you will need to sign in using your Windows Live ID.

Step 2

Now, you can create a Windows project. (I used Visual C# 2008 Express.) You need to add a web reference to:

Use your AppId for YourAppId. I gave the name MyBingService. You may give any name of your choice.

Tip: You can add a Web Reference by right clicking the Project node in Solution Explorer -> Add Service Reference -> Advanced... button -> Add Web Reference... button.

Step 3

Below is the sample code. Note that I used only the necessary code/properties for the demonstration. You may look at the Bing API documentation for complete information.

using System;
using System.Windows.Forms;
using WindowsFormsApplication1.MyBingService;
namespace WindowsFormsApplication1
    public partial class Form1 : Form
        public Form1()
        private void Form1_Load(object sender, EventArgs e)
            LiveSearchService service = new LiveSearchService();
            SearchRequest request = new SearchRequest();
            // use your Bing AppID
            request.AppId = "put_your_AppID_her_please";
            request.Query = "ninethsense"; // your search query
            // I want to search only web
            request.Sources = new SourceType[] { SourceType.Web }; 
            SearchResponse response = service.Search(request);
            foreach (WebResult result in response.Web.Results)
                listBox1.Items.Add(result.Title + " URL: " + result.Url);

Source code explanation

using WindowsFormsApplication1.MyBingService;

This is the web reference you added in Step 2.

LiveSearchService service = new LiveSearchService();

I create an object for LiveSearchService.

SearchRequest request = new SearchRequest();
request.AppId = "put_your_AppID_her_please"; // use your Bing AppID
request.Query = "ninethsense"; // your search query

// I want to search only web
request.Sources = new SourceType[] { SourceType.Web }; 

I create a search query (request.Query) using the AppID (request.AppId) and specify whether I have to search web or image or video or...

Refer to the documentation for all available source types. Some are:

  • SourceType.Web
  • SourceType.Image
  • SourceType.Video
  • SourceType.Spell
  • SourceType.News
  • SourceTyp3.InstantAnswer
  • etc.
SearchResponse response = service.Search(request);

Do search! Result(s) will be available in the identifier response.

foreach (WebResult result in response.Web.Results)
    listBox1.Items.Add(result.Title + " URL: " + result.Url);

I placed a ListBox control in the form to show search data. This code populates the ListBox.

Step 4

No step 4! Just execute the application.

Why no source code is attached?

Simply because I do not like to ship with my personal AppId Smile | :) . Also, I was too lazy to write a custom configuration file to store that - which may make the article complex for a beginner. Ask me questions! I am here.

Useful links


  • 18th July, 2009: Initial post.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Praveen Nair (NinethSense)
India India
Praveen.V.Nair - aka NinethSense - PMP, Microsoft MVP - is working as a Head of Technology and Architecture at Orion India Systems, Kochi, India. He has been playing with electronics from the age of 10 and with computers from the age of 14. He usually blogs at
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Comments and Discussions

QuestionBing LiveSearchService PinmemberMember 105004334-Mar-14 0:03 
QuestionI only get 10 results PinmemberNikolas1994i1-Mar-12 3:27 
GeneralMy vote of 3 PinmemberHasitha_Dayarathna5-Mar-11 2:58 
Generalfind not liveserv Pinmembermehmettemel14-Aug-10 12:16 
GeneralRe: find not liveserv PinmemberMember 768565918-Feb-11 8:55 
GeneralRe: find not liveserv PinmemberNinethSense18-Feb-11 13:03 
Generalthe number of results Pinmemberxxsaxx6-Dec-09 22:39 
GeneralCould not find LiveSearchService() PinmemberRavi@UK22-Sep-09 8:40 
GeneralRe: Could not find LiveSearchService() PinmemberMember 437383918-Dec-09 0:06 
GeneralRe: Could not find LiveSearchService() Pinmemberjuidan27-Apr-10 3:02 
GeneralRe: Could not find LiveSearchService() PinmemberGarry Lowther21-Nov-11 5:24 
GeneralResults.. Pinmember-Sean-14-Aug-09 15:38 
GeneralRe: Results.. PinmemberNinethSense14-Aug-09 21:51 
GeneralNice Article. Pinmembernkmkrishna30-Jul-09 3:32 
JokeRe: Nice Article. PinmemberNinethSense30-Jul-09 4:14 
Generalgetting started Pinmembersenerd0225-Jul-09 0:47 
GeneralRe: getting started Pinmembersenerd0225-Jul-09 2:29 
GeneralRe: getting started PinmemberNinethSense26-Jul-09 20:50 
GeneralThank you PinmemberSvein Erik Storkås23-Jul-09 23:39 
GeneralDecent article PinmemberBlue36520-Jul-09 11:04 
Quite a good article, I guess it isn't the most taxing subject, but this article does the job. Nothing I can get excited about, but you know...

GeneralLook at the Bing Sharp library PinmemberJoseph Guadagno20-Jul-09 5:46 
GeneralRe: Look at the Bing Sharp library PinmemberNinethSense20-Jul-09 19:29 
GeneralMy vote of 1 PinmemberMike Ozzie20-Jul-09 4:00 
GeneralRe: My vote of 1 PinmemberNinethSense20-Jul-09 19:29 
GeneralRe: My vote of 1 PinmemberNinethSense21-Jul-09 20:04 

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