using System;

using NCalc;

​

public class Program

{

    public static void Main()

    {

        bool myClass = InheritsBaseEntity(typeof(MyClass));

        bool myOtherClass = InheritsBaseEntity(typeof(MyOtherClass));

        bool audit = InheritsBaseEntity(typeof(Audit));

        Console.WriteLine(nameof(myClass) + " " + myClass);

        Console.WriteLine(nameof(myOtherClass) + " " + myOtherClass);

        Console.WriteLine(nameof(audit) + " " + audit);

    }

    private static bool InheritsBaseEntity(Type type)

    {

        while (type != null && type != typeof(object))

        {

            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(BaseEntity<>))

            {

                return true;

            }

            type = type.BaseType; // Move up the inheritance hierarchy

        }

​

        return false;

    }

    public abstract class BaseEntity<TId>

    {

        public TId Id { get; set; }

    }

    public class MyClass : BaseEntity<Guid>{}

    public class MyOtherClass : BaseEntity<int>{}

    public class Audit : BaseEntity<object>{} //no Id

}