基本教程篇--第八节PieSampleDemo.cs介绍

基本教程篇--第八节PieSampleDemo.cs介绍2011-10-05 csdn博客 TJVictor这节我把饼形图粗略的介绍一下，如下图。
using System;

using System.Drawing;

using System.Collections;

using ZedGraph;

namespace ZedGraph.Demo

{

     ///<summary>

     /// Summary description for SimpleDemo.

     ///</summary>

     public class PieSampleDemo : DemoBase

     {

           public PieSampleDemo（） : base（ "Code Project Pie Sample",

                                                 "Pie Sample", DemoType.Pie, DemoType.Tutorial ）

           {

                GraphPane myPane = base.GraphPane;

                // Set the GraphPane title

                myPane.Title = "2004 ZedGraph Sales by Regionn（$M）";

                myPane.FontSpec.IsItalic = true;

                myPane.FontSpec.Size = 24f;

                myPane.FontSpec.Family = "Times";

                // Fill the pane background with a color gradient

                myPane.PaneFill = new Fill（ Color.White, Color.Goldenrod, 45.0f ）;

                // No fill for the axis background

                myPane.AxisFill.Type = FillType.None;

                // Set the legend to an arbitrary location

                myPane.Legend.Position = LegendPos.Float ;

                myPane.Legend.Location = new Location（ 0.95f, 0.15f, CoordType.PaneFraction,

                                           AlignH.Right, AlignV.Top ）;

                myPane.Legend.FontSpec.Size = 10f;

                myPane.Legend.IsHStack = false;

                // Add some pie slices

                PieItem segment1 = myPane.AddPieSlice（ 20, Color.Navy, Color.White, 45f, 0, "North" ）;

                PieItem segment3 = myPane.AddPieSlice（ 30, Color.Purple, Color.White, 45f, .0, "East" ）;

                PieItem segment4 = myPane.AddPieSlice（ 10.21, Color.LimeGreen, Color.White, 45f, 0, "West" ）;

                PieItem segment2 = myPane.AddPieSlice（ 40, Color.SandyBrown, Color.White, 45f, 0.2, "South" ）;

                PieItem segment6 = myPane.AddPieSlice（ 250, Color.Red, Color.White, 45f, 0, "Europe" ）;

                PieItem segment7 = myPane.AddPieSlice（ 50, Color.Blue, Color.White, 45f, 0.2, "Pac Rim" ）;

                PieItem segment8 = myPane.AddPieSlice（ 400, Color.Green, Color.White, 45f, 0, "South America" ）;

                PieItem segment9 = myPane.AddPieSlice（ 50, Color.Yellow, Color.White, 45f, 0.2, "Africa" ）;

                segment2.LabelDetail.FontSpec.FontColor = Color.Red;

                // Sum up the pie values                                                                                                                

                CurveList curves = myPane.CurveList ;

                double total = 0 ;

                for （ int x = 0 ; x < curves.Count ; x++ ）

                     total += （（PieItem）curves[x]）.Value ;

                // Make a text label to highlight the total value

                TextItem text = new TextItem（ "Total 2004 Salesn" + "$" + total.ToString （） + "M",

                                           0.18F, 0.40F, CoordType.PaneFraction ）;

                text.Location.AlignH = AlignH.Center;

                text.Location.AlignV = AlignV.Bottom;

                text.FontSpec.Border.IsVisible = false ;

                text.FontSpec.Fill = new Fill（ Color.White, Color.FromArgb（ 255, 100, 100 ）, 45F ）;

                text.FontSpec.StringAlignment = StringAlignment.Center ;

                myPane.GraphItemList.Add（ text ）;

                // Create a drop shadow for the total value text item

                TextItem text2 = new TextItem（ text ）;

                text2.FontSpec.Fill = new Fill（ Color.Black ）;

                text2.Location.X += 0.008f;

                text2.Location.Y += 0.01f;

                myPane.GraphItemList.Add（ text2 ）;

                base.ZedGraphControl.AxisChange（）;

           }

     }

}