Basic Tutorial Chapter--The eighth section PieSampleDemo.cs introduction

In this section I introduce the pie chart roughly, as shown below.

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 = "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 a 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 (Color.navy, Color.White, 45f, 0, "North");

Pieitem Segment3 = Mypane.addpieslice (Color.purple, Color.White, 45f,. 0, "East");

Pieitem segment4 = Mypane.addpieslice (10.21, Color.limegreen, Color.White, 45f, 0, "West");

Pieitem Segment2 = Mypane.addpieslice (Color.sandybrown, Color.White, 45f, 0.2, "South");

Pieitem segment6 = Mypane.addpieslice (color.red, Color.White, 45f, 0, "Europe");

Pieitem segment7 = Mypane.addpieslice (M, Color.Blue, Color.White, 45f, 0.2, "Pac Rim");

Pieitem segment8 = Mypane.addpieslice (Color.green, Color.White, 45f, 0, "South America");

Pieitem segment9 = Mypane.addpieslice (M, 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-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, MB), 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 ();

}

}

}