The following NextDouble extension method uses the Random class's existing NextDouble method to generate a double value within a range:
public static class RandomExtensions{ // A Random objects shared by all extensions. private static Random Rand = new Random(); // Return a double between minValue and maxValue. public static double NextDouble(this Random rand, double minValue, double maxValue) { return minValue + Rand.NextDouble() * (maxValue - minValue); }}
The RandomExtensions class creates a Random object at the class level. That object is static, so it is available to all extension methods defined in this class.
If you create a new Random object without passing its constructor a seed value, the class uses the system's ...
