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<html><head><link rel=stylesheet href=style.css></head><body><div class=SourcePanel style='font-size:12'><pre style='background-color:white'>
<font color= "blue">using</font> System;
<font color= "blue">using</font> System.Drawing;
<font color= "blue">using</font> System.Collections;
<font color= "blue"></font>
<font color= "blue">namespace</font> ASPNET.StarterKit.Chart
<font color= "blue"></font>{
<font color= "green"> //*********************************************************************</font>
<font color= "green"> //</font>
<font color= "green"> // Chart Class</font>
<font color= "green"> //</font>
<font color= "green"> // Base class implementation for BarChart and PieChart</font>
<font color= "green"> //</font>
<font color= "green"> //*********************************************************************</font>
<font color= "blue"></font>
<font color= "blue"> </font>abstract public class Chart
<font color= "blue"> </font>{
<font color= "blue"> private const </font>int _colorLimit = 12;
<font color= "blue"></font>
<font color= "blue"> private </font>Color[] _color =
<font color= "blue"> </font>{
<font color= "blue"> </font>Color.Chocolate,
<font color= "blue"> </font>Color.YellowGreen,
<font color= "blue"> </font>Color.Olive,
<font color= "blue"> </font>Color.DarkKhaki,
<font color= "blue"> </font>Color.Sienna,
<font color= "blue"> </font>Color.PaleGoldenrod,
<font color= "blue"> </font>Color.Peru,
<font color= "blue"> </font>Color.Tan,
<font color= "blue"> </font>Color.Khaki,
<font color= "blue"> </font>Color.DarkGoldenrod,
<font color= "blue"> </font>Color.Maroon,
<font color= "blue"> </font>Color.OliveDrab
<font color= "blue"> </font>};
<font color= "blue"></font>
<font color= "green"> // Represent collection of all data points for the chart</font>
<font color= "blue"> private </font>ChartItemsCollection _dataPoints = new ChartItemsCollection();
<font color= "blue"></font>
<font color= "green"> // The implementation of this method is provided by derived classes</font>
<font color= "blue"> public </font>abstract Bitmap Draw();
<font color= "blue"></font>
<font color= "blue"> public </font>ChartItemsCollection DataPoints
<font color= "blue"> </font>{
<font color= "blue"> </font>get{ return _dataPoints; }
<font color= "blue"> </font>set{ _dataPoints = value; }
<font color= "blue"> </font>}
<font color= "blue"></font>
<font color= "blue"> public void</font> SetColor(int index, Color NewColor)
<font color= "blue"> </font>{
<font color= "blue"></font><font color= "blue"> if </font>(index < _colorLimit) <font color= "blue"></font>
<font color= "blue"> </font>{
<font color= "blue"> </font>_color[index] = NewColor;
<font color= "blue"> </font>}
<font color= "blue"></font><font color= "blue"> else</font><font color= "blue"></font>
<font color= "blue"> </font>{
<font color= "blue"> </font>throw new Exception("Color Limit is " + _colorLimit);
<font color= "blue"> </font>}
<font color= "blue"> </font>}
<font color= "blue"></font>
<font color= "blue"> public </font>Color GetColor(int index)
<font color= "blue"> </font>{
<font color= "blue"></font><font color= "blue"> if </font>(index < _colorLimit) <font color= "blue"></font>
<font color= "blue"> </font>{
<font color= "blue"> return</font> _color[index];
<font color= "blue"> </font>}
<font color= "blue"></font><font color= "blue"> else</font><font color= "blue"></font>
<font color= "blue"> </font>{
<font color= "blue"> </font>throw new Exception("Color Limit is " + _colorLimit);
<font color= "blue"> </font>}
<font color= "blue"> </font>}
<font color= "blue"> </font>}
<font color= "blue"></font>}
</pre>
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