问Type.GetType返回空

EN

 public partial class Shell : Window
{
    private IModuleManager ModuleManager;
    private IUnityContainer Container;
    private IModuleCatalog ModuleCatalog;

    public Shell(IModuleManager moduleManager, IUnityContainer container, IModuleCatalog moduleCatalog)
    {
        this.ModuleCatalog = moduleCatalog;

        if (moduleManager == null) throw new ArgumentException("Modulemanager is null");

        ModuleManager = moduleManager;
        ModuleManager.Run();


        Container = container;

        foreach (var module in ModuleCatalog.Modules)
        {
            OpenMainView(module);
        }

        InitializeComponent();
    }

    private void OpenMainView(ModuleInfo module)
    {
        Type ModuleType = Type.GetType(module.ModuleType); //this returns null
    }