我这样问的原因是,您可以使用Value属性将可空类型转换为常规类型。这让我认为常规类型只是包装在可空类型中。
发布于 2011-05-16 12:41:56
根据MSDN "Nullable types are instances of the System.Nullable<T> struct. A nullable type can represent the correct range of values for its underlying value type, plus an additional null value"
https://stackoverflow.com/questions/6013210
复制相似问题