NTGraph绘图控件，有源代码，该控件能绘制各种曲线，坐标图形o-NTGraph Mapping Control, the active code, which can draw various controls curve coordinates graphics o

绘制二维图像（点和线），使用很简单，自定义的绘图元素-Draw two-dimensional images (point and line), the use of very simple, custom graphics elements