这是一个追加问题，如果您想看见的话可以查看以下内容：将值解析为可空枚举类型
Type t = currentProperty.PropertyType;
if (t.GetGenericTypeDefinition() == typeof(Nullable<>))
t = t.GetGenericArguments().First();
我在第2行遇到了一个错误，这是一个 IF 语句。
System.Reflection.TargetInvocationException : Exception has been thrown by the
target of an invocation. ----> System.InvalidOperationException : This operation
is only valid on generic types.
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Activator.CreateInstance(Type type, Object[] args)
在执行IF语句代码之前，我该如何测试该条件？