Operator + cannot be applied to operands of type 'method group and 'int'

Question

Hello I have a problem that I'm trying to fire a bullet everytime I pressed the spacebar key, but I have this problem that is cropping up.
 if ((e.KeyCode == Keys.Space) && (playerOne.Bullet.Alive == false))
                            playerOne.Bullet.Alive = true;
                            playerOne.Bullet.getX = playerOne.getXposition + 15;
                            playerOne.Bullet.getY = playerOne.getYposition + 10;
It says in the error list: "Opeartor '+' cannot be applied to operands of type 'method group' and 'int'", I have no clue. I'm also new to programming.

Answer 1

I want to get the bullet to shoot where the player is, here is the code:
class Player
        // attributes here  -   Int other words data types and variables:
        int health = 3;
        float xPosition;
        float yPosition;
        Bitmap playerGraphics;
        int score = 0;
        bool leftPressed;
        bool rightPressed;
        float Width = 50;
        public Bullet Bullet = new Bullet();
        // functions here:
        public void Init()
            // Get Player_Bat.png from resources, so that we can work with it:
            playerGraphics = new Bitmap(Green_Aliens.Properties.Resources.Player_Bat);
            health = 3;
            score = 0;
            xPosition = 375;
            yPosition = 540;
            leftPressed = false;
            rightPressed = false;
            Bullet Bullet = new Bullet();
        public float getWidth()
            return Width;
        public void toggleLeftPressed()
            if (leftPressed == true)
                leftPressed = false;
            else
                leftPressed = true;
        public void toggleRightPressed()
            if (rightPressed == true)
                rightPressed = false;
            else
                rightPressed = true;
        public bool getLeftPressed()
            return leftPressed;
        public bool getRightpressed()
            return rightPressed;
        public Bitmap getGraphics()
            return playerGraphics;
        public float getXposition()
            return xPosition;
        public float getYposition()
            return yPosition;
        public int getHealth()
            return health;
        public int getScore()
            return score;
        public void moveLeft()
            xPosition -= 10;
        public void moveRight()
            xPosition += 10;
        public void loseLife()
            health--;
        public void adScore(int valueAdd)
            score += valueAdd;
        //Resets the player to the start position:
        public void resetPosition()
            xPosition = 400;
            yPosition = 550;