.NET 中,编译器直接支持的数据类型称为基元类型(primitive type).基元类型和.NET框架类型(FCL)中的类型有直接的映射关系. The primitive types are Boolean, Byte, SByte, Int16, UInt16, Int32, UInt32, Int64, UInt64, IntPtr, UIntPtr, Char, Double, and Single. https://msdn.microsoft.com/zh-cn/library/s…