The Google Web APIs Developer's Kit includes a sample C# Visual Studio .NET (http://msdn.microsoft.com/vstudio/) project for a simple GUI Google search application (take a look in the dotnet/CSharp folder). The functional bits that you would probably find most interesting are in the Form1.cs code.
This hack provides basic code for a simple console Google search application similar in function (and, in the case of Java [Hack #97] , form, too) to those in Perl Hack #98 ], et al.
Type this code and save it to a text file called googly.cs:
// googly.cs // A Google Web API C# console application. // Usage: googly.exe <query> // Copyright (c) 2002, Chris Sells. // No warranties extended. Use at your own risk. using System; class Googly { static void Main(string[] args) { // Your Google API developer's key. string googleKey = "insert key here"; // Take the query from the command line. if( args.Length != 1 ) { Console.WriteLine("Usage: google.exe <query>"); return; } string query = args[0]; // Create a Google SOAP client proxy, generated by: // c:\> wsdl.exe http://api.google.com/GoogleSearch.wsdl GoogleSearchService googleSearch = new GoogleSearchService( ); // Query Google. GoogleSearchResult results = googleSearch.doGoogleSearch(googleKey, query, 0, 10, false, ", false, ", "latin1", "latin1"); // No results? if( results.resultElements == null ) return; // Loop through results. foreach( ResultElement result in results.resultElements ) { Console.WriteLine( ); Console.WriteLine(result.title); Console.WriteLine(result.URL); Console.WriteLine(result.snippet); Console.WriteLine( ); } } } Remember to insert your Google developer's key in place of insert key here, like so:
// Your Google API developer's key. string googleKey = " 12BuCK13mY5h0E/34KN0cK@ttH3Do0R ";
Before compiling the C# code itself, you must create a Google SOAP client proxy. The proxy is a wodge of code custom-built to the specifications of the GoogleSearch.wsdl file, an XML-based description of the Google Web Service, all its methods, parameters, and return values. Fortunately, you don't have to do this by hand; the .NET Framework kit includes an application, wsdl.exe, that does all the coding for you.
Call wsdl.exe with the location of your GoogleSearch.wsdl file like so:
C:\GOOGLY.NET>wsdl.exe GoogleSearch.wsdl If you don't happen to have the WSDL file handy, don't fret. You can point wsdl.exe at its location on Google's web site:
C:\GOOGLY.NET\CS>wsdl.exe http://api.google.com/GoogleSearch.wsdl Microsoft (R) Web Services Description Language Utility [Microsoft (R) .NET Framework, Version 1.0.3705.0] Copyright (C) Microsoft Corporation 1998-2001. All rights reserved. Writing file 'C:\GOOGLY.NET\CS\GoogleSearchService.cs'.
The end result is a GoogleSearchService.cs file that looks something like this:
//-------------------------------------------------------------------------- // <autogenerated> // This code was generated by a tool. // Runtime Version: 1.0.3705.288 // // Changes to this file may cause incorrect behavior and will be lost if // the code is regenerated. // </autogenerated> //-------------------------------------------------------------------------- // // This source code was auto-generated by wsdl, Version=1.0.3705.288. // using System.Diagnostics; using System.Xml.Serialization; using System; using System.Web.Services.Protocols; using System.ComponentModel; using System.Web.Services; ... public System.IAsyncResult BegindoGoogleSearch(string key, string q, int start, int maxResults, bool filter, string restrict, bool safeSearch, string lr, string ie, string oe, System.AsyncCallback callback, object asyncState) { return this.BeginInvoke("doGoogleSearch", new object[] { key, q, start, maxResults, filter, restrict, safeSearch, lr, ie, oe}, callback, asyncState); } ...
Now on to googly.cs itself:
C:\GOOGLY.NET\CS>csc /out:googly.exe *.cs Microsoft (R) Visual C# .NET Compiler version 7.00.9466 for Microsoft (R) .NET Framework version 1.0.3705 Copyright (C) Microsoft Corporation 2001. All rights reserved.
Run Googly on the command line ["How to Run the Hacks" in the Preface], passing it your Google query:
C:\GOOGLY.NET\CS>googly.exe " query words "
Here's a sample run:
% googly.exe " WSDL while you work " Axis/Radio interop, actual and potential http://www.intertwingly.net/stories/2002/02/08/ axisradioInteropActualAndPotentiall <b>...</b> But <b>you</b> might find more exciting services here <b>...</b> Instead, we should <b>work</b> together and<br> continuously strive to <b>...</b> <b>While</b> <b>WSDL</b> is certainly far from perfect and has many <b>...</b> ... Simplified <b>WSDL</b> http://capescience.capeclear.com/articles/simplifiedWSDL/ <b>...</b> So how does it <b>work</b>? <b>...</b> If <b>you</b> would like to edit <b>WSDL</b> <b>while</b> still avoiding<br> all those XML tags, check out the <b>WSDL</b> Editor in CapeStudio. <b>...</b>