XNA - no definition for 'isMouseVisible'
===

I'm trying to get my cursor visible in an XNA game using isMouseVisible, but it doesn't want to work. The error:

 - 'StopWatch.Game1' does not contain a definition for 'isMouseVisible' and no extension method 'isMouseVisible' accepting a first argument of type 'StopWatch.Game1' could be found

Code:


    using System;
    using System.Collections.Generic;
    using System.Linq;
    using Microsoft.Xna.Framework;
    using Microsoft.Xna.Framework.Audio;
    using Microsoft.Xna.Framework.Content;
    using Microsoft.Xna.Framework.GamerServices;
    using Microsoft.Xna.Framework.Graphics;
    using Microsoft.Xna.Framework.Input;
    using Microsoft.Xna.Framework.Media;
    
    namespace StopWatch
    {
        public class Game1 : Microsoft.Xna.Framework.Game
        {
            GraphicsDeviceManager graphics;
            public SpriteBatch spriteBatch;
            public static Game1 Instance;
            StopWatch stopWatch;

            public Game1()
            {
                this.isMouseVisible = true;
                graphics = new GraphicsDeviceManager(this);
                Instance = this;
                Content.RootDirectory = "Content";
                graphics.PreferredBackBufferWidth = 512;
                graphics.PreferredBackBufferHeight = 512;
            }

            protected override void Initialize()
            {
                stopWatch = new StopWatch(); 
                base.Initialize();
            }

            protected override void LoadContent()
            {
                spriteBatch = new SpriteBatch(GraphicsDevice);
                stopWatch.LoadContent();
            }

            protected override void UnloadContent()
            {
                stopWatch.UnloadContent();
            }

            protected override void Update(GameTime gameTime)
            {
                if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
                    this.Exit();

                stopWatch.Update(gameTime);
                base.Update(gameTime);
            }

            protected override void Draw(GameTime gameTime)
            {
                GraphicsDevice.Clear(Color.CornflowerBlue);
                spriteBatch.Begin();
                stopWatch.Draw(gameTime);
                spriteBatch.End();
                base.Draw(gameTime);
            }
        }
    }
