请问C#中怎么画(由X轴和Y轴组成的)数轴?

Question

我想用C#显示出数轴,并在上面画出几个点.

Answer 1

private void Form1_Paint(object sender, PaintEventArgs e)
{
    e.Graphics.DrawLine(Pens.Black, new Point(0, ClientSize.Height / 2),
        new Point(ClientSize.Width, ClientSize.Height / 2));
    e.Graphics.DrawLine(Pens.Black, new Point(ClientSize.Width / 2, 0),
      new Point(ClientSize.Width / 2, ClientSize.Height));    //todo : 其他绘制
}

Answer 2

感谢zswang的回复```我试试看```

Answer 3

可以用Graphic来绘，可以参看msdn中关于graphic的用法，如果图形复杂的话，可以考虑第三方控件，参见
http://blog.csdn.net/tjvictor/archive/2006/11/24/1412546.aspx

Answer 4

zswang, I have coyied the code to program, but nothing display.
Is there any code needed?
Thanks.(I am in university lab, the system is in English,so...)

Answer 5

将代码放到Form1的Paint事件里执行private void button1_Click(object sender, EventArgs e)
{
    Graphics vGraphics = Graphics.FromHwnd(Handle);
    vGraphics.DrawLine(Pens.Black, new Point(0, ClientSize.Height / 2),
         new Point(ClientSize.Width, ClientSize.Height / 2));
    vGraphics.DrawLine(Pens.Black, new Point(ClientSize.Width / 2, 0),
      new Point(ClientSize.Width / 2, ClientSize.Height));
}简单来说就是通过Graphics类的DrawLine()方法绘制直线

Answer 6

Cheers. I will try it.

Answer 7

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