Select - Anonymous Types 1

Query

public void Linq9()
{
    string[] words = { "aPPLE", "BlUeBeRrY", "cHeRry" };
  
    var upperLowerWords =
        from w in words
        select new { Upper = w.ToUpper(), Lower = w.ToLower() };
  
    foreach (var ul in upperLowerWords)
    {
        Console.WriteLine("Uppercase: {0}, Lowercase: {1}", ul.Upper, ul.Lower);
    }
}

Lambda Expression

public void DataSetLinq9()
{
    var words = testDS.Tables["Words"].AsEnumerable();
 
    var upperLowerWords = words.Select(p => new
    {
        Upper = (p.Field(0)).ToUpper(),
        Lower = (p.Field(0)).ToLower()
    });
 
    foreach (var ul in upperLowerWords)
    {
        Console.WriteLine("Uppercase: " + ul.Upper + ", Lowercase: " + ul.Lower);
    }
}

Output

Uppercase: APPLE, Lowercase: apple
Uppercase: BLUEBERRY, Lowercase: blueberry
Uppercase: CHERRY, Lowercase: cherry