C#中属性、特性和反射是几个非常重要的特性，但是理解和使用较困难，本文从实际应用的角度出发通过具 体示例简要地介绍了它们的原理和机制。

The properties, attributes and reflection are very important features of C#. However, they are difficult to understand and use. This paper briefly describes their principles and mechanisms from the perspective of practical application with concrete examples.