Finding all Namespaces in an assembly using Reflection (DotNET)

Question

I\'ve got an assembly (loaded as ReflectionOnly) and I want to find all the namespaces in this assembly so I can convert them into \"using\" (\"Imports\" in VB) statements f

Answer 1

public static void Main() {

    var assembly = ...;

    Console.Write(CreateUsings(FilterToTopLevel(GetNamespaces(assembly))));
}

private static string CreateUsings(IEnumerable namespaces) {
    return namespaces.Aggregate(String.Empty,
                                (u, n) => u + "using " + n + ";" + Environment.NewLine);
}

private static IEnumerable FilterToTopLevel(IEnumerable namespaces) {
    return namespaces.Select(n => n.Split('.').First()).Distinct();
}

private static IEnumerable GetNamespaces(Assembly assembly) {
    return (assembly.GetTypes().Select(t => t.Namespace)
            .Where(n => !String.IsNullOrEmpty(n))
            .Distinct());
}