1 public static void CountWords()
 2         {   
3             string text = @"Historically, the world of data and the world of objects" +
 4             @" have not been well integrated. Programmers work in C# or Visual Basic" +
 5             @" and also in SQL or XQuery. On the one side are concepts such as classes,
 
" +
 6             @" objects, fields, inheritance, and .NET Framework APIs. On the other side" +
 7             @" are tables, columns, rows, nodes, and separate languages for dealing with" +
 8             @" them. Data types often require translation between the two worlds; there are" +
 9             @"
 
 different standard functions. Because the object world has no notion of query, a" +
10             @" query can only be represented as a string without compile-time type checking or" +
11             @" IntelliSense support in the IDE. Transferring data from SQL tables or XML trees to" +
12             @"
 
 objects in memory is often tedious and error-prone.";
13             string searchTerm = "data";
14             string[] source = text.Split(new char[] { '.', '?', '!', ' ', ';', ':', ',' },
15                 StringSplitOptions.RemoveEmptyEntries);
16             var matchQuery = from word in source
17                              where word.ToUpperInvariant() == searchTerm.ToUpperInvariant()
18                              select word;
19             int wordCount = matchQuery.Count();
20             Console.WriteLine("{0} occurrences(s) of the search term \"{1}\" were found.",wordCount,searchTerm);
21             Console.ReadKey();
22 
23         }