Combining multiple conditional expressions in C#

Question

In C#, instead of doing if(index == 7 || index == 8), is there a way to combine them? I\'m thinking of something like if(index == (7, 8)).

Answer 1

Write your own extension methods so you can write

if (index.Between(7, 8)) {...}

where Between is defined as:

    public static bool Between (this int a, int x, int y)
    {
        return a >= x && a <= y;
    }