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    <p>Your problem is not understanding how enumerative types work. Specifically, this line:</p> <pre><code>game1.GameStates = IntroState; </code></pre> <p>First, let's discuss a little of what an enum actually is. It's a structure that simply assigns names to integer values, and can then refer to each value by name, and thus make code more readable (as it's far easier to understand <code>direction = Dir.Up</code> than <code>direction = 1</code>).</p> <p>Notice how I use those two example statements, though. In the code, you treat the enum as a <em>type</em> not as a <em>variable</em>, and this is the problem you're encountering. In fact, your problem is twofold. The first issue id that you're trying to assign a value to a structure, which is similar to writing <code>int = 4</code> - i.e. it doesn't make sense. Your second issue is that enums are not global, so <code>IntroState</code> has no meaning outside <code>game1</code>.</p> <p>Interestingly enough, you've set up the system correctly, as you have the <code>currentGameState</code> variable, which is what you actually intend to change. However, it is a <code>private</code> variable, disallowing access to it from outside the game1 class. You can either make the variable <code>public</code>, or create a <code>property</code> to access it. The latter is good practice, as it allows you to control how the variable is set. To create this, you can use something like this:</p> <pre><code>public GameStates CurrentState { get { return currentGameState; } set { currentGameState = value; } } </code></pre> <p>Once you have this in your game1 class, you can set the game state like so:</p> <pre><code>game1.CurrentState = Game1.GameStates.IntroState; </code></pre> <p>Notice how this code tells the program where to look for what you want. <code>IntroState</code> is part of a structure (<code>GameStates</code>) within game1, and so needs to be accessed explicitly.</p> <p>Hopefully, this has helped you to understand how enumerative types work, and why the code you wrote doesn't make sense, and thus why it breaks.</p>
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    1. PO'GameStates': cannot reference a type through an expression; try 'menuinterface.Game1.GameStates' instead
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    1. PO'GameStates': cannot reference a type through an expression; try 'menuinterface.Game1.GameStates' instead
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    1. COI changed my code(look above at my question) but it still doesn't work. I get this error message in the Intro class: 'GameStates': cannot reference a type through an expression; try 'menuinterface.Game1.GameStates' instead
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    2. COYou may have to use the class name rather than the instance name when referring to IntroState, so Game1.GameStates.IntroState, rather than game1.GameStates.IntroState.
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    3. COThanx. It works now.
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