C# with Bonus

using System;

namespace AscendingSpiral
{
    public class Spiral
    {
        private enum Direction
        {
            Up,
            Down,
            Left,
            Right
        }

        public enum Rotation
        {
            Clockwise,
            Counterclockewise
        }

        private int spiralNum { get; set; }
        private Rotation rotation { get; set; }
        private int[,] spiralArray { get; set; }

        public Spiral(int numberToSpiral, Rotation rotation)
        {
            spiralNum = numberToSpiral;
            spiralArray = new int[spiralNum, spiralNum];
            this.rotation = rotation;
            CreateSpiral();
        }

        private void CreateSpiral()
        {
            Direction curDirection = rotation == Rotation.Clockwise ? Direction.Right : Direction.Down;

            switch(rotation){
                case Rotation.Clockwise:
                    CreateSpiralClockwise();
                    break;
                case Rotation.Counterclockewise:
                    CreateSpiralCounterClockwise();
                    break;
            }
        }

        private void CreateSpiralCounterClockwise(){
            var row = 0;
            var col = 0;
            var curNum = 1;
            var bottomBoundary = spiralNum - 1;
            var rightBoundary = spiralNum - 1;
            var leftBoundary = 0;
            var topBoundary = 0;
            var curDirection = Direction.Down;


            while(curNum <= spiralNum * spiralNum){

                spiralArray[X, Y] = curNum;

                if(curDirection == Direction.Down){
                    if(row == bottomBoundary){
                        col++;
                        bottomBoundary--;
                        curDirection = Direction.Right;
                    }else{
                        row++;
                    }

                    curNum++;
                    continue;
                }

                if(curDirection == Direction.Right){
                    if(col == rightBoundary){
                        row--;
                        rightBoundary--;
                        curDirection = Direction.Up;
                    }else{
                        c++;
                    }

                    curNum++;
                    continue;
                }

                if(curDirection == Direction.Up){
                    if(row == topBoundary){
                        col--;
                        topBoundary++;
                        curDirection = Direction.Left;
                    }else{
                        row--;
                    }

                    curNum++;
                    continue;
                }

                if(curDirection == Direction.Left){
                    if(col == leftBoundary){
                        row++;
                        leftBoundary++;
                        curDirection = Direction.Down;
                    }else{
                        col--;
                    }

                    curNum++;
                    continue;
                }
            }
        }

        private void CreateSpiralClockwise(){
            var X = 0;
            var Y = 0;
            var curNum = 1;
            var rightBound = spiralNum - 1;
            var downBound = spiralNum - 1;
            var leftBound = 0;
            var upBound = 0;
            var curDirection = Direction.Right;

            while (curNum <= spiralNum * spiralNum)
            {
                if (curDirection == Direction.Right)
                {
                    spiralArray[X, Y] = curNum;

                    if (Y == rightBound)
                    {
                        curDirection = Direction.Down;
                        X++;
                        rightBound--;
                    }
                    else
                    {
                        Y++;
                    }

                    curNum++;
                    continue;
                }

                if (curDirection == Direction.Down)
                {
                    spiralArray[X, Y] = curNum;

                    if (X == downBound)
                    {
                        curDirection = Direction.Left;
                        Y--;
                        downBound--;
                    }
                    else
                    {
                        spiralArray[X, Y] = curNum;
                        X++;
                    }

                    curNum++;
                    continue;
                }

                if (curDirection == Direction.Left)
                {
                    spiralArray[X, Y] = curNum;

                    if (Y == leftBound)
                    {
                        curDirection = Direction.Up;
                        X--;
                        leftBound++;
                    }
                    else
                    {
                        Y--;
                    }

                    curNum++;
                    continue;
                }

                if (curDirection == Direction.Up)
                {
                    if (X == upBound)
                    {
                        curDirection = Direction.Right;
                        X++;
                        Y++;
                        spiralArray[X, Y] = curNum;
                        upBound++;
                        Y++;
                    }
                    else
                    {
                        spiralArray[X, Y] = curNum;
                        X--;
                    }

                    curNum++;
                    continue;
                }
            }
        }

        public void PrintSpiral()
        {
            Console.WriteLine("--------------------------------------------------");
            for (int i = 0; i < spiralNum; i++)
            {
                for (int j = 0; j < spiralNum; j++)
                {
                    if(spiralNum > 10)
                        Console.Write(String.Format("{0,5}", spiralArray[i, j].ToString()));
                    else
                        Console.Write(String.Format("{0,3}", spiralArray[i, j].ToString()));
                }
                Console.WriteLine();
            }
        }
    }
}