public partial class App : Application
    {
        public static List<Type> SecurityTypes = new List<Type>() { typeof(SecurityTest) };
    }  

var ts = new List<Type>();
foreach(var t in ts)
{
      if (t == typeof(Class1))
             Class1.StaticMethod1();
      else if (t == typeof(Class2))
             Class2.StaticMethod2();
}

private void SecuritySettings_Loaded(object sender, RoutedEventArgs e)
        {
            //Получим из App список наших классов
            this.listBox1.ItemsSource = App.SecurityTypes;

            foreach (Type type in App.SecurityTypes)
            {   
                // Grabbing the specific static method
                MethodInfo methodInfo = type.GetMethod("GetSecurityInfoList", System.Reflection.BindingFlags.Static | BindingFlags.Public);

                // Binding the method info to generic arguments
                //Type[] genericArguments = new Type[] { };
                //MethodInfo genericMethodInfo = methodInfo.GetBaseDefinition();

                // Simply invoking the method and passing parameters
                // The null parameter is the object to call the method from. Since the method is
                // static, pass null.
                object returnValue = methodInfo.Invoke(null, new object[] { });

                this.listBox2.ItemsSource = (List<SecurityInfo>)returnValue;
            }
        }