Access variable inside while loop from outside (C#)?

Question

I'm New to C# and I'm trying to reach the value of MAX from the while so i can use it outside but i can't...anyone have some ideas !!! Thanks In Advance

while (Condition)
{    
    Double MAX = somecode.....
                         .....
}

Console.WriteLine("The OPTIMAL Value : " + MAX); 

Answer 1

Declare MAX before you start the while loop. The way you have it you can only access within the while.

Double MAX = 0;
while (Condition)
            {    

                MAX = somecode.....
                                      .....
            }

            Console.WriteLine("The OPTIMAL Value : " + MAX);