如何从C#中禁用的动态字段中获取数据？

dynamic obj = new ExpandoObject();
obj.Name = "John";
obj.Age = 25;

IDictionary<string, object> dictionary = (IDictionary<string, object>)obj;
object nameValue = dictionary["Name"];
object ageValue = dictionary["Age"];

string name = nameValue.ToString();
int age = Convert.ToInt32(ageValue);

dynamic obj = new ExpandoObject();
obj.Name = "John";
obj.Age = 25;

((IDictionary<string, object>)obj).TryGetMember = (GetMemberBinder binder, out object result) =>
{
    if (binder.Name == "Name")
    {
        result = null; // 禁止访问字段
        return true;
    }
    return false;
};

string name = obj.Name; // 将返回 null，因为访问被禁止
int age = obj.Age; // 可以正常访问