using System;
using System.ComponentModel;
using System.Drawing;

namespace ConsoleApp1 {
    class Program {
        static void Main(string[] args) {
            try {
                var attr = TypeDescriptor.GetAttributes(typeof(BackgroundWorker));
                Console.WriteLine("No exception for BackgroundWorker");
            } catch(Exception ex) {
                Console.WriteLine("Exception for BackgroundWorker: " + ex.ToString());
            }
            try {
                var attr = TypeDescriptor.GetAttributes(typeof(MyComponent));
                Console.WriteLine("No exception for MyComponent");
            } catch(Exception ex) {
                Console.WriteLine("Exception for MyComponent: " + ex.ToString());
            }
        }
    }
    [ToolboxBitmap(typeof(MyComponent), "Icon.bmp")]
    public class MyComponent : Component {
    }
}