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| class GroupExample1 | |
| { | |
| static void Main() | |
| { | |
| // Create a data source. | |
| string[] words = { "blueberry", "chimpanzee", "abacus", "banana", "apple", "cheese" }; | |
| // Create the query. | |
| var wordGroups = | |
| from w in words | |
| group w by w[0]; | |
| // Execute the query. | |
| foreach (var wordGroup in wordGroups) | |
| { | |
| Console.WriteLine("Words that start with the letter '{0}':", wordGroup.Key); | |
| foreach (var word in wordGroup) | |
| { | |
| Console.WriteLine(word); | |
| } | |
| } | |
| // Keep the console window open in debug mode | |
| Console.WriteLine("Press any key to exit."); | |
| Console.ReadKey(); | |
| } | |
| } | |
| /* Output: | |
| Words that start with the letter 'b': | |
| blueberry | |
| banana | |
| Words that start with the letter 'c': | |
| chimpanzee | |
| cheese | |
| Words that start with the letter 'a': | |
| abacus | |
| apple | |
| */ |