2010年1月27日
C# Nullable 类型
摘要： Nullable types are one of those great little inventions to help you with the impedance mismatch between object-oriented applications and relational databases. Let's take a fake OrderClass that maps to... 阅读全文
posted @ 2010-01-27 14:16 code_flyer 阅读(555) 评论(0) 推荐(0)