该程序用C#编程，能够画出直线，并能测出画直线的时间等等（注：在画直线的那设个断点，才能看到时间），切记，该程序很经典-The program in c# programming, can draw a straight line, and the time can measure the draw a line and so on (note: draw a line in the set breakpoints, can see time), remember, this program i