Extension Methods

Extension Methods

class Program
{
    static void Main()
    {
        string s = "Hello Extension Methods";
        int i = s.WordCount();
    }
}

public static class MyExtensions
{
    public static int WordCount(this String str)
    {
        return str.Split(new char[] { ' ', '.', '?' },
                         StringSplitOptions.RemoveEmptyEntries).Length;
    }
}