CSharp编写的绘图程序实例，包括创建线性梯度、连接线条,由直线、曲线和形状创建图形,在一个区域点击检测,绘制不透明和半透明的线条,绘制贝赛尔样条等等多种绘图技术的实例-CSharp procedures for the preparation of drawing examples, including the creation of linear gradient connecting lines from the straight line. curves and shapes to c