是否将变量转换为仅在运行时已知的类型?

您正在使用的类型 IConvertible . 因此你可以使用 ChangeType

 value = Convert.ChangeType(method.Invoke(null, new[] { value }), paramType);

您可以动态进行;例如:

using System;

namespace TypeCaster
{
    class Program
    {
        internal static void Main(string[] args)
        {
            Parent p = new Parent() { name = "I am the parent", type = "TypeCaster.ChildA" };
            dynamic a = Convert.ChangeType(new ChildA(p.name), Type.GetType(p.type));
            Console.WriteLine(a.Name);

            p.type = "TypeCaster.ChildB";
            dynamic b = Convert.ChangeType(new ChildB(p.name), Type.GetType(p.type));
            Console.WriteLine(b.Name);
        }
    }

    internal class Parent
    {
        internal string type { get; set; }
        internal string name { get; set; }

        internal Parent() { }
    }

    internal class ChildA : Parent
    {
        internal ChildA(string name)
        {
            base.name = name + " in A";
        }

        public string Name
        {
            get { return base.name; }
        }
    }

    internal class ChildB : Parent
    {
        internal ChildB(string name)
        {
            base.name = name + " in B";
        }

        public string Name
        {
            get { return base.name; }
        }
    }
}