Bing 是微軟開發的搜尋引擎，使用者可透過 Bing API 開發程式，本文使用 Bing API 做圖片搜尋。
更多文章，請到我在點部落所建立的部落格「.NET菜鳥自救會」閱讀
http://www.dotblogs.com.tw/chou/

1. 簡介
   Bing 是微軟開發的搜尋引擎，使用者可透過 Bing API 開發程式，本文使用 Bing API 做圖片搜尋。
   想要使用 Bing API，需申請 AppID，於網址 http://www.bing.com/developers/default.aspx，使用 Live Passport 登入，並輸入相關資訊，註冊後得到一組 AppID
   

2. 方法
   (1) 加入 Web 參考
   

在 [URL] 中輸入 http://api.search.live.net/search.wsdl?AppID=申請的AppID，修改 [Web 參考名稱]，點選 [加入參考]

在程式中 using 專案名稱.參考名稱

using SmartDeviceBing.net.live.search.api;

(2) 程式碼

using System;
using System.Linq;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using SmartDeviceBing.net.live.search.api;

namespace SmartDeviceBing
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnSearch_Click(object sender, EventArgs e)
        {
            // LiveSearchService implements IDisposable.
            using (LiveSearchService service = new LiveSearchService())
            {
                try
                {
                    SearchRequest request = BuildRequestWeb();

                    // Send the request; display the response.
                    SearchResponse response = service.Search(request);
                    DisplayResponseWeb(response);
                }
                catch (System.Net.WebException ex)
                {
                     MessageBox.Show(ex.Message);
                }
            }
        }

        private SearchRequest BuildRequestWeb()
        {
            SearchRequest request = new SearchRequest();

            // Common request fields (required)
            request.AppId = "B692A148D1624C4E3C1248C8E5DDC209E524D2C4";
            request.Query = this.txtQuery.Text;
            request.Sources = new SourceType[] { SourceType.Image };

            // Common request fields (optional)
            request.Version = "2.0";
            request.Market = "en-us";
            request.Adult = AdultOption.Moderate;
            request.AdultSpecified = true;
            request.Options = new SearchOption[]
            {
                SearchOption.EnableHighlighting
            };

            // Web-specific request fields (optional)
            request.Web = new WebRequest();
            request.Web.Count = 10;
            request.Web.CountSpecified = true;
            request.Web.Offset = 0;
            request.Web.OffsetSpecified = true;
            request.Web.Options = new WebSearchOption[]
            {
                WebSearchOption.DisableHostCollapsing,
                WebSearchOption.DisableQueryAlterations
            };
            return request;
        }

        private void DisplayResponseWeb(SearchResponse response)
        {
            this.lstView.Items.Clear();

            // Display the results header.
            this.labBing.Text = string.Format("Displaying {0} to {1} of {2} results",
                                                response.Image.Offset + 1,
                                                response.Image.Offset + response.Image.Results.Count(),
                                                response.Image.Total);
            // Display the Image results.
            foreach (ImageResult result in response.Image.Results)
            {
                ListViewItem lvItem = new ListViewItem(result.Title);
                lvItem.SubItems.Add(result.MediaUrl);
                lvItem.SubItems.Add(result.Width + "x" + result.Height);
                this.lstView.Items.Add(lvItem);
            }
        }

        private void lstView_SelectedIndexChanged(object sender, EventArgs e)
        {
            for (int i = 0; i < lstView.Items.Count; i++ )
            {
                if (lstView.Items[i].Selected)
                {
                    // 讀取網路圖片到 PictureBox   
                    System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(lstView.Items[i].SubItems[1].Text);
                    System.Net.HttpWebResponse rsp = (System.Net.HttpWebResponse)req.GetResponse();
                    if (rsp.StatusCode == System.Net.HttpStatusCode.OK)
                    {
                        this.PicBoxPhoto.Image = new Bitmap(rsp.GetResponseStream());
                    }
                    rsp.Close();
                }
            }
        }
    }
}

(3) 執行結果