C# winform 饼图

Question

winform中实现饼图可使用zedgraph,ms chart
GDI
http://topic.csdn.net/u/20100208/10/11ece9e2-14ea-4dac-b0ae-b2694fe55639.html

Answer 1

有没有基本的模板，网上有的不能运行  有的是web的。。

Answer 2

我用的DevExpress 控件 ，饼图还是很不错的各种图表都有

Answer 3

用GDI+绘图不可以吗、?我们学的时候好像就是用GDI+绘的！

Answer 4

嗯嗯，再问呢private void Form1_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            //3D Pie chart
            g.SmoothingMode = SmoothingMode.AntiAlias;
            Rectangle er=new Rectangle(300, 150, 300, 200);
            Rectangle br=er;
            br.Offset(0,30);            g.DrawEllipse(Pens.Gray, br);
           
            g.FillPie(new SolidBrush(Color.FromArgb(200, Color.Red)), er, 0, 120);
            g.FillPie(new SolidBrush(Color.FromArgb(200, Color.Purple)), er, 120, 100);
            g.FillPie(new SolidBrush(Color.FromArgb(200, Color.Blue)), er, 220, 140);            GraphicsPath gpg = new GraphicsPath();
            gpg.AddArc(er, 0, 180);
            gpg.AddLine(er.Left, er.Top + er.Height / 2, br.Left, br.Top + br.Height / 2);
            gpg.AddArc(br, 0, 180);
            gpg.AddLine(br.Left + br.Width, br.Top + br.Height / 2,er.Left + er.Width, er.Top + er.Height / 2);
                        //Draw pie borders
            g.DrawPie(Pens.Goldenrod, er, 0, 120);
            g.DrawPie(Pens.Goldenrod, er, 120, 240);
            g.DrawEllipse(Pens.Goldenrod, er);            //multi color gradient
            Point StartPoint = new Point(er.Left,0);
            Point EndPoint = new Point(er.Left + er.Width, 0);
            Color[] GColors ={
                                Color.Red,
                                Color.White,
                                Color.Red
                            };
            float[] GPoints ={
                                0.0f,
                                0.8f,
                                1.0f
                            };
            ColorBlend CB = new ColorBlend();
            CB.Colors = GColors;
            CB.Positions = GPoints;
            LinearGradientBrush lgb = new LinearGradientBrush(StartPoint, EndPoint, Color.Red, Color.Red);
            lgb.InterpolationColors = CB;            g.FillPath(lgb, gpg);                      
            lgb.Dispose();
            gpg.Dispose();
            g.Dispose();
        }
这个代码生成了一个饼图，那怎么改变他的大小，通过textbox里的数值。

Answer 5

http://www.cnblogs.com/ly5201314/archive/2009/04/01/1427226.html