AssemblyLoadEventArgs.cs

using System.Reflection;
using System.Runtime.InteropServices;

namespace System
{
    [ComVisible(true)]
    public class AssemblyLoadEventArgs : EventArgs
    {
        private Assembly _LoadedAssembly;

        public Assembly LoadedAssembly => _LoadedAssembly;

        public AssemblyLoadEventArgs(Assembly loadedAssembly)
        {
            _LoadedAssembly = loadedAssembly;
        }
    }
}