AboutDrawLine

代码说明：

  　C#使用DrawLine对象绘制一条直线，绘制水平线和垂直线，点击对应的按钮，即可调用DrawLine方法绘制直线，一种固定的模式，没有什么难度，C#入门新手参考会不错，学习一点图形绘制方面的基础知识(C# uses the DrawLine object to draw a straight line, draw horizontal and vertical lines, click the corresponding button, you can call the DrawLine method to draw a straight line, a fixed pattern, there is no difficulty, C# Beginner Novice reference would be good to learn a little graphics rendering aspects Basics)