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‎dotnet/Search/BingImageSearchv7.cs‎

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//Copyright (c) Microsoft Corporation. All rights reserved.
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//Licensed under the MIT License.
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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using Newtonsoft.Json;
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using System;
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using System.Text;
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using System.Net;
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using System.IO;
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using System.Collections.Generic;
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namespace BingSearchApisQuickstart
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{
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/* This sample makes a call to the Bing Search API with a text query and returns relevant data from the web.
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* Documentation: https://docs.microsoft.com/en-us/azure/cognitive-services/bing-web-search/
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*/
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namespace BingImageSearch
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{
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class Program
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{
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// **********************************************
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// *** Update or verify the following values. ***
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// **********************************************
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// Add your Azure Bing Search V7 subscription key to your environment variables.
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const string accessKey = Environment.GetEnvironmentVariable("BING_SEARCH_V7_SUBSCRIPTION_KEY");
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// Add your Azure Bing Search V7 endpoint to your environment variables.
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const string uriBase = Environment.GetEnvironmentVariable("BING_SEARCH_V7_ENDPOINT") + "/bing/v7.0/images/search";
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// Add your Azure Bing Search V7 subscription key and endpoint to your environment variables.
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static string subscriptionKey = Environment.GetEnvironmentVariable("BING_SEARCH_V7_SUBSCRIPTION_KEY");
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static string endpoint = Environment.GetEnvironmentVariable("BING_SEARCH_V7_ENDPOINT") + "/bing/v7.0/images/search";
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const string searchTerm = "puppies";
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// Used to return image search results including relevant headers
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struct SearchResult
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{
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public String jsonResult;
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public Dictionary<String, String> relevantHeaders;
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}
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const string query = "puppies";
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static void Main()
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{
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Console.OutputEncoding = System.Text.Encoding.UTF8;
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if (accessKey.Length == 32)
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{
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Console.WriteLine("Searching images for: " + searchTerm);
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SearchResult result = BingImageSearch(searchTerm);
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Console.WriteLine("\nRelevant HTTP Headers:\n");
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foreach (var header in result.relevantHeaders)
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Console.WriteLine(header.Key + ": " + header.Value);
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Console.WriteLine("\nJSON Response:\n");
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Console.WriteLine(JsonPrettyPrint(result.jsonResult));
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}
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else
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{
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Console.WriteLine("Invalid Bing Search API subscription key!");
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Console.WriteLine("Please paste yours into the source code.");
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}
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Console.OutputEncoding = Encoding.UTF8;
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Dictionary<String, String> relevantHeaders = new Dictionary<String, String>();
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Console.Write("\nPress Enter to exit ");
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Console.ReadLine();
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}
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Console.WriteLine("Searching images for: " + query);
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/// <summary>
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/// Performs a Bing Image search and return the results as a SearchResult.
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/// </summary>
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static SearchResult BingImageSearch(string searchQuery)
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{
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// Construct the URI of the search request
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var uriQuery = uriBase + "?q=" + Uri.EscapeDataString(searchQuery);
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var uriQuery = endpoint + "?q=" + Uri.EscapeDataString(query);
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// Perform the Web request and get the response
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WebRequest request = HttpWebRequest.Create(uriQuery);
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request.Headers["Ocp-Apim-Subscription-Key"] = accessKey;
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request.Headers["Ocp-Apim-Subscription-Key"] = subscriptionKey;
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HttpWebResponse response = (HttpWebResponse)request.GetResponseAsync().Result;
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string json = new StreamReader(response.GetResponseStream()).ReadToEnd();
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// Create result object for return
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var searchResult = new SearchResult()
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{
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jsonResult = json,
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relevantHeaders = new Dictionary<String, String>()
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};
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// Extract Bing HTTP headers
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foreach (String header in response.Headers)
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{
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if (header.StartsWith("BingAPIs-") || header.StartsWith("X-MSEdge-"))
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searchResult.relevantHeaders[header] = response.Headers[header];
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relevantHeaders[header] = response.Headers[header];
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}
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return searchResult;
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}
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/// <summary>
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/// Formats the given JSON string by adding line breaks and indents.
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/// </summary>
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/// <param name="json">The raw JSON string to format.</param>
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/// <returns>The formatted JSON string.</returns>
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static string JsonPrettyPrint(string json)
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{
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if (string.IsNullOrEmpty(json))
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return string.Empty;
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json = json.Replace(Environment.NewLine, "").Replace("\t", "");
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StringBuilder sb = new StringBuilder();
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bool quote = false;
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bool ignore = false;
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char last = ' ';
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int offset = 0;
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int indentLength = 2;
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foreach (char ch in json)
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{
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switch (ch)
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{
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case '"':
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if (!ignore) quote = !quote;
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break;
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case '\\':
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if (quote && last != '\\') ignore = true;
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break;
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}
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if (quote)
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{
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sb.Append(ch);
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if (last == '\\' && ignore) ignore = false;
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}
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else
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{
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switch (ch)
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{
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case '{':
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case '[':
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sb.Append(ch);
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sb.Append(Environment.NewLine);
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sb.Append(new string(' ', ++offset * indentLength));
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break;
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case '}':
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case ']':
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sb.Append(Environment.NewLine);
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sb.Append(new string(' ', --offset * indentLength));
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sb.Append(ch);
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break;
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case ',':
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sb.Append(ch);
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sb.Append(Environment.NewLine);
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sb.Append(new string(' ', offset * indentLength));
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break;
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case ':':
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sb.Append(ch);
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sb.Append(' ');
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break;
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default:
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if (quote || ch != ' ') sb.Append(ch);
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break;
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}
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}
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last = ch;
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}
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Console.WriteLine("\nRelevant HTTP Headers:\n");
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foreach (var header in relevantHeaders)
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Console.WriteLine(header.Key + ": " + header.Value);
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return sb.ToString().Trim();
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Console.WriteLine("\nJSON Response:\n");
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dynamic parsedJson = JsonConvert.DeserializeObject(json);
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Console.WriteLine(JsonConvert.SerializeObject(parsedJson, Formatting.Indented));
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}
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}
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}

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