Pick A Random Number Between X And Y?

I have this code to pick a random number Between X and Y

X = Minimum Number
Y = Maximum Number

But the problem is i wanted to know if there is a better random function than the one i have.

Because right now i put

Min = 1
Max= 2

and it keeps picking 1

if i had min =1 and max =2 i want it to pick 1 sometimes and 2 sometimes

and now i tried min = 1 max = 3 and it never picks 3, it only picks 1 and 2


ok
Public Class Form1
Public Function RandomNumber(ByVal MinNumber As Integer, ByVal MaxNumber As Integer) As Integer

[Code].....