C# 添加到存储库时出现NullReferenceException
我想我一定是错过了什么正直视着我的东西 这是我的密码：C# 添加到存储库时出现NullReferenceException,c#,exception,C#,Exception,我想我一定是错过了什么正直视着我的东西 这是我的密码： var addToBasket = new AddToBasket { RetailerId = retailerId, ProductId = productId, Pric
var addToBasket = new AddToBasket
{
RetailerId = retailerId,
ProductId = productId,
Price = price,
CreatedAt = DateTime.Now,
WidgetImpressionId = widgetImpressionId,
Quantity = quantity,
VisitStore = false
};
_addToBasketRepository.Add(addToBasket);
Add我知道Id=0，但它是一个自动递增的Id列，所以我认为这不是问题。唯一可能为null以引发此类异常的对象是
\u addtobasketpository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
NullReferenceException在使用
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
//假设它确实是一个列表而不是其他集合
_AddToBaskeTropository=新列表（）
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
NullReferenceException在使用
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
//假设它确实是一个列表而不是其他集合
_AddToBaskeTropository=新列表（）
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
NullReferenceException在使用
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
//假设它确实是一个列表而不是其他集合
_AddToBaskeTropository=新列表（）
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
NullReferenceException在使用
\u addToBasketRepository// assuming that it is indeed a List and not some other collection
_addToBasketRepository = new List<AddToBacket>()
//假设它确实是一个列表而不是其他集合
_AddToBaskeTropository=新列表（）
\u addToBasketRepositoryAddToBasket\u addtobasketpositionAddToBasket\u addtobasketpositionAddToBasket\u addtobasketpositionAddToBasket\u addtobasketpository\u addtobasketpository\u addtobasketpository\u addtobasketpository\u addtobasketpository\u addtobasketpository\u addtobasketpository\u addtobasketpository