Try this:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication5
{
class Program
{
static void Main(string[] args)
{
Program objPgrm = new Program();
Console.WriteLine( objPgrm.Random_number(14, 100));
Console.ReadLine();
}
private int Random_number(int min, int max)
{
int RndNO = new Random().Next(min, max);
return ((max - min + 1) * RndNO + min);
}
}
}