This is a little snipplet i’ve been using over the years in several tasks and it’s purpose is to get a listing of all class names that belong to a given namespace. For this we’ll be using the System.Reflection namespace:

public Collection FindAllnamespaceClasses(string namespaceName)
{
	Assembly currentAssembly = Assembly.GetExecutingAssembly();

	// Set list to hold all namespaces
	List namespaceList = new List();

	// Set list to hold all namespace classes
	Collection classList = new Collection();

	foreach (Type type in currentAssembly.GetTypes())
	{
		if (type.Namespace.ToUpper().Contains(namespaceName))
		namespaceList.Add(type.Name);
	}

	// Loop through all the classes and add them
	foreach (string className in namespaceList)
		classList.Add(className);

	return classList;
}

And that’s it. This will return all the classes that belong to the specified namespace. If you need to infer over namespaces belonging on a different assembly, line 3 should use the Assembly.GetAssembly() method, and pass a type belonging to that same namespace as parameter.