A first chance exception of type 'System.NullReferenceException' occurred in 直角坐标系.exe
An unhandled exception of type 'System.NullReferenceException' occurred in 直角坐标系.exe
运行不了
Additional information: 未将对象引用设置到对象的实例。
The program '[4148] 直角坐标系.vshost.exe: Managed (v4.0.30319)' has exited with code 0
下载下来学习了，感觉帮助不大
A first chance exception of type 'System.NullReferenceException' occurred in 直角坐标系.exe An unhandled exception of type 'System.NullReferenceException' occurred in 直角坐标系.exe 运行不了 Additional information: 未将对象引用设置到对象的实例。 The program '[4148] 直角坐标系.vshost.exe: Managed (v4.0.30319)' has exited with code 0
适合初学的画直角坐标系的实例，学习了