这是我自己写的有关C#的图书管理系统的文档，有完整的设计思路，和详细代码，非常适合课程设计-This is what I wrote about myself C# library management system documentation, a complete design ideas, and detailed code, very suitable for curriculum design

这是杜洋C#上位机教程的全部示例代码，大家可以下载之后学习参考(This is all the sample code of Du Yang's CSharp upper computer course)