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I need a singleton class to be instantiated with some arguments. The way I'm doing it now is: class SingletonExample { private SingletonExample mInstance; //other members... private SingletonExample() { } public SingletonExample Instance { get { if (mInstance == null) { throw new Exception("Object not created"); } return mInstance; } } public void Create(string arg1, string arg2) { mInstance = new SingletonExample(); mInstance.Arg1 = arg1; mInstance.ObjectCaller = new ObjectCaller(arg2); //etc... basically, create object... } } The instance is created 'late', meaning I don't have all of the needed arguments on app startup. In general I don't like forcing an ordering of method calls, but I don't see another way here. The IoC wouldn't resolve it either, since where I can register it in the container, I can also call Create()... Do you consider this an OK scenario? Do you have some other idea? edit : I know that what I wrote as an example it's not thread safe, thread-safe isn't part of the question

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