How to elegantly check if a number is within a range?

Question

How can I do this elegantly with C# and .NET 3.5/4?

For example, a number can be between 1 and 100.

I know a simple if would suffice; but the keyword to this

Answer 1

Regarding elegance, the closest thing to the mathematical notation (a <= x <= b) slightly improves readability:

public static bool IsBetween(this int value, int min, int max)
{
    return min <= value && value <= max;
}

For further illustration:

public static bool IsOutside(this int value, int min, int max)
{
    return value < min || max < value;
}