采用GDI+绘制方式，实现简单的热度图。(Using GDI+ drawing method to achieve a simple heat map.)

小米笔记本价格监测系统，能够自由选择笔记本类型，设置监测时间间隔，然后基于GDI+，在窗体中进行了笔记本价格绘制折线图(The price monitoring system of mi notebook is able to choose notebook types freely and set up monitoring time interval. Then, based on GDI+, we draw the folding line of notebook price in the

基于C#窗体设计的小米笔记本价格监测系统，能够自由选择笔记本类型，设置监测时间间隔，然后基于GDI+，在窗体中进行了笔记本价格绘制折线图(The price monitoring system of mi notebook is able to choose notebook types freely and set up monitoring time interval. Then, based on GDI+, we draw the folding line of notebook pri