ConstructorSelector.cs

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using System;
using System.Linq;
using System.Reflection;
using Dreamine.MVVM.Interfaces.DependencyInjection;
 
namespace Dreamine.MVVM.Core.DependencyInjection
{
    public sealed class ConstructorSelector : IConstructorSelector
    {
        public ConstructorInfo SelectConstructor(Type implementationType)
        {
            if (implementationType is null)
            {
                throw new ArgumentNullException(nameof(implementationType));
            }
 
            ConstructorInfo? constructor = implementationType
                .GetConstructors()
                .OrderByDescending(item => item.GetParameters().Length)
                .FirstOrDefault();
 
            if (constructor is null)
            {
                throw new InvalidOperationException(
                    $"No public constructor was found for [{implementationType.FullName}].");
            }
 
            return constructor;
        }
    }
}