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Posted 17 Jul 2009

Bing API in Action - C#

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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 :). 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 Pin
Member 105004333-Mar-14 23:03
memberMember 105004333-Mar-14 23:03 
QuestionI only get 10 results Pin
Nikolas1994i1-Mar-12 2:27
memberNikolas1994i1-Mar-12 2:27 
GeneralMy vote of 3 Pin
Hasitha_Dayarathna5-Mar-11 1:58
memberHasitha_Dayarathna5-Mar-11 1:58 
Generalfind not liveserv Pin
mehmettemel14-Aug-10 11:16
membermehmettemel14-Aug-10 11:16 
GeneralRe: find not liveserv Pin
Member 768565918-Feb-11 7:55
memberMember 768565918-Feb-11 7:55 
GeneralRe: find not liveserv Pin
NinethSense18-Feb-11 12:03
memberNinethSense18-Feb-11 12:03 
Generalthe number of results Pin
xxsaxx6-Dec-09 21:39
memberxxsaxx6-Dec-09 21:39 
GeneralCould not find LiveSearchService() Pin
Ravi@UK22-Sep-09 7:40
memberRavi@UK22-Sep-09 7:40 
GeneralRe: Could not find LiveSearchService() Pin
Member 437383917-Dec-09 23:06
memberMember 437383917-Dec-09 23:06 
GeneralRe: Could not find LiveSearchService() Pin
juidan27-Apr-10 2:02
memberjuidan27-Apr-10 2:02 
GeneralRe: Could not find LiveSearchService() Pin
Garry Lowther21-Nov-11 4:24
memberGarry Lowther21-Nov-11 4:24 
GeneralResults.. Pin
-Sean-14-Aug-09 14:38
member-Sean-14-Aug-09 14:38 
GeneralRe: Results.. Pin
NinethSense14-Aug-09 20:51
memberNinethSense14-Aug-09 20:51 
GeneralNice Article. Pin
nkmkrishna30-Jul-09 2:32
membernkmkrishna30-Jul-09 2:32 
JokeRe: Nice Article. Pin
NinethSense30-Jul-09 3:14
memberNinethSense30-Jul-09 3:14 
Generalgetting started Pin
senerd0224-Jul-09 23:47
membersenerd0224-Jul-09 23:47 
GeneralRe: getting started Pin
senerd0225-Jul-09 1:29
membersenerd0225-Jul-09 1:29 
GeneralRe: getting started Pin
NinethSense26-Jul-09 19:50
memberNinethSense26-Jul-09 19:50 
GeneralThank you Pin
Svein Erik Storkås23-Jul-09 22:39
memberSvein Erik Storkås23-Jul-09 22:39 
GeneralDecent article Pin
Blue36520-Jul-09 10:04
memberBlue36520-Jul-09 10:04 
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 Pin
Joseph Guadagno20-Jul-09 4:46
memberJoseph Guadagno20-Jul-09 4:46 
GeneralRe: Look at the Bing Sharp library Pin
NinethSense20-Jul-09 18:29
memberNinethSense20-Jul-09 18:29 
GeneralMy vote of 1 Pin
Mike Ozzie20-Jul-09 3:00
memberMike Ozzie20-Jul-09 3:00 
GeneralRe: My vote of 1 Pin
NinethSense20-Jul-09 18:29
memberNinethSense20-Jul-09 18:29 
GeneralRe: My vote of 1 Pin
NinethSense21-Jul-09 19:04
memberNinethSense21-Jul-09 19:04 

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