I basically want a character to walk in one direction for a while, stop, then go in another random direction. Right now my sprites look but don't move, randomly very quickly in all directions then wait and have another seizure. I will post the code I have so far in case that is useful.

class NPC: Mover
{
    int movementTimer = 0;

    public override Vector2 direction
    {
        get
        {
            Random rand = new Random();
            int randDirection = rand.Next(8);

            Vector2 inputDirection = Vector2.Zero;


            if (movementTimer >= 50)
            {
                if (randDirection == 4)
                {
                    inputDirection.X -= 1;
                    movingLeft = true;
                }
                else movingLeft = false;

                if (randDirection == 1)
                {
                    inputDirection.X += 1;
                    movingRight = true;
                }
                else movingRight = false;

                if (randDirection == 2)
                {
                    inputDirection.Y -= 1;
                    movingUp = true;
                }
                else movingUp = false;

                if (randDirection == 3)
                {
                    inputDirection.Y += 25;
                    movingDown = true;
                }
                else movingDown = false;

                if (movementTimer >= 100)
                {
                    movementTimer = 0;
                }
            }

            return inputDirection * speed;
        }
    }

    public NPC(Texture2D textureImage, Vector2 position,
        Point frameSize, int collisionOffset, Point currentFrame, Point sheetSize,
        Vector2 speed)
        : base(textureImage, position, frameSize, collisionOffset, currentFrame,
        sheetSize, speed)
    {
    }

    public NPC(Texture2D textureImage, Vector2 position,
        Point frameSize, int collisionOffset, Point currentFrame, Point sheetSize,
        Vector2 speed, int millisecondsPerframe)
        : base(textureImage, position, frameSize, collisionOffset, currentFrame,
        sheetSize, speed, millisecondsPerframe)
    {
    }

    public override void Update(GameTime gameTime, Rectangle clientBounds)
    {

        movementTimer++;
        position += direction;

        if (position.X < 0)
            position.X = 0;
        if (position.Y < 0)
            position.Y = 0;
        if (position.X > clientBounds.Width - frameSize.X)
            position.X = clientBounds.Width - frameSize.X;
        if (position.Y > clientBounds.Height - frameSize.Y)
            position.Y = clientBounds.Height - frameSize.Y;


        base.Update(gameTime, clientBounds);
    }
}