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I want to create a static class or singleton class that accepts a reference to another object in its constructor. Static classes are out, but I figured I could create a singleton that accepts parameters in its constructor. So far I haven't had any luck figuring out or googling the syntax. Is this possible? if so, how do I do it? Sorry for no example in the initial post, I wrote it in a rush. I have the feeling that my answer is already in the replies, but here's some clarification of what I want to do: I want to create a single instance of a specific type (said Singleton), but that single instance of the type needs to hold a reference to a different object. For example, I might want to create a Singleton "Status" class, which owns a StringBuilder object and a Draw() method that can be called to write said StringBuilder to the screen. The Draw() method needs to know about my GraphcisDevice in order to draw. So what I want to do it this: public class Status { private static Status _instance; private StringBuilder _messages; private GraphicsDevice _gDevice; private Status(string message, GraphicsDevice device) { _messages.Append(message); _gDevice = device; } // The following isn't thread-safe // This constructor part is what I'm trying to figure out public static Status Instance // (GraphicsDevice device) { get { if (_instance == null) { _instance = new Status("Test Message!", device); } return _instance; } } public void UpdateMessage ... public void Draw() { // Draw my status to the screen, using _gDevice and _messages } } All over the code, I retrieve my Status Singleton and call its UpdateMessage() method. private Status _status = Status.Instance; // + pass reference to GraphicsDevice _status.UpdateMessage("Foo!"); Then, in my main class I also retrieve the singl

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