最近一直挺忙的，都沒時間寫博客了，好在這是基礎篇的最後一篇了，我也可以歇歇了，關於其它的深入章節我會在以後的時間補上的。
先來看看這一節的示圖和源代碼吧。
using System;
using System.Drawing;
using System.Collections;
using ZedGraph;
namespace ZedGraph.Demo
{
///<summary>
/// Summary description for SimpleDemo.
///</summary>
public class MasterSampleDemo : DemoBase
{
public MasterSampleDemo() : base( "Code Project MasterPane Sample",
"MasterPane Sample", DemoType.Tutorial )
{
MasterPane myMaster = base.MasterPane;
// Remove the default GraphPane that comes with ZedGraphControl
myMaster.PaneList.Clear();
// Set the masterpane title
myMaster.Title = "ZedGraph MasterPane Example";
myMaster.IsShowTitle = true;
// Fill the masterpane background with a color gradient
myMaster.PaneFill = new Fill( Color.White, Color.MediumSlateBlue, 45.0F );
// Set the margins to 10 points
myMaster.MarginAll = 10;
// Enable the masterpane legend
myMaster.Legend.IsVisible = true;
myMaster.Legend.Position = LegendPos.TopCenter;
// Add a priority stamp
TextItem text = new TextItem( "Priority", 0.88F, 0.12F );
text.Location.CoordinateFrame = CoordType.PaneFraction;
text.FontSpec.Angle = 15.0F;
text.FontSpec.FontColor = Color.Red;
text.FontSpec.IsBold = true;
text.FontSpec.Size = 15;
text.FontSpec.Border.IsVisible = false;
text.FontSpec.Border.Color = Color.Red;
text.FontSpec.Fill.IsVisible = false;
text.Location.AlignH = AlignH.Left;
text.Location.AlignV = AlignV.Bottom;
myMaster.GraphItemList.Add( text );
// Add a draf watermarkè
text = new TextItem( "DRAFT", 0.5F, 0.5F );
text.Location.CoordinateFrame = CoordType.PaneFraction;
text.FontSpec.Angle = 30.0F;
text.FontSpec.FontColor = Color.FromArgb( 70, 255, 100, 100 );
text.FontSpec.IsBold = true;
text.FontSpec.Size = 100;
text.FontSpec.Border.IsVisible = false;
text.FontSpec.Fill.IsVisible = false;
text.Location.AlignH = AlignH.Center;
text.Location.AlignV = AlignV.Center;
text.ZOrder = ZOrder.A_InFront;
myMaster.GraphItemList.Add( text );
// Initialize a color and symbol type rotator
ColorSymbolRotator rotator = new ColorSymbolRotator();
// Create some new GraphPanes
for ( int j=0; j<5; j++ )
{
// Create a new graph - rect dimensions do not matter here, since it
// will be resized by MasterPane.AutoPaneLayout()
GraphPane myPane = new GraphPane( new Rectangle( 10, 10, 10, 10 ),
"Case #" + (j+1).ToString(),
"Time, Days",
"Rate, m/s" );
// Fill the GraphPane background with a color gradient
myPane.PaneFill = new Fill( Color.White, Color.LightYellow, 45.0F );
myPane.BaseDimension = 6.0F;
// Make up some data arrays based on the Sine function
PointPairList list = new PointPairLis_u40 ?);
for ( int i=0; i<36; i++ )
{
double x = (double) i + 5;
double y = 3.0 * ( 1.5 + Math.Sin( (double) i * 0.2 + (double) j ) );
list.Add( x, y );
}
// Add a curve to the Graph, use the next sequential color and symbol
LineItem myCurve = myPane.AddCurve( "Type " + j.ToString(),
list, ro_u97 ?tor.NextColor, rotator.NextSymbol );
// Fill the symbols with white to make them opaque
myCurve.Symbol.Fill = new Fill( Color.White );
// Add the GraphPane to the MasterPane
myMaster.Add( myPane );
}
Graphics g = this.ZedGraphControl.CreateGraphics();
// Tell ZedGraph to auto layout the new GraphPanes
myMaster.AutoPaneLayout( g, PaneLayout.ExplicitRow32 );
myMaster.AxisChange( g );
g.Dispose();
}
}
}
這一節主要是講多pane的創建方法。裏面大部分的方法和屬性在以前的章節中已經介紹過了，這裏只想講三個地方：MasterPane類、ColorSymbolRotator類和ZOrder這個屬性的用法。
首先就是MasterPane類。這個類就是創建多pane的類，是一個GraphPane類的集合。它裏面的大部分屬性和方法都繼承自PaneBase和Object。像.NET一樣，這個類提供了Item和PaneList屬性來設置和獲取裏面的成員。在程序中我們也看到了，其實MasterPane什麼也沒做，就是把其它的類一項項的Add進它的集合中。
ColorSymbolRotator類就是一個爲GraphPane.AddCurve方法循環提供不同顏色和符號的類。這個類的東西不多，我個人認爲就相當於一個枚舉一樣，我們可以看到程序中只用到了rotator.NextColor rotator.NextSymbol這兩個屬性，來獲取不同的顏色和符號。
最後就是Zorder這個屬性了，在前面的幾節中我們也見過這個屬性，可是當時我沒有講，現在我說說。Zorder就是圖形在Z軸的位置。如果我們在平面上把左右看成X軸，把上下看成Y軸，那麼內外就是Z軸了，也就是Zorder就是圖形在內外的位置(這個內外是針對其它圖形來說的)。我們可以看看示圖中的DRAFT這個水印的效果，這就是Zorder的功能。如果你把程序中的
text.ZOrder = ZOrder.A_InFront;改成text.ZOrder = ZOrder.G_BehindAll;
那麼DRAFT就是如下的效果了，DRAFT就在各個Pane的下面了。
Zorder是一個枚舉共有七個枚舉值。分別是G_BehindAll、F_BehindAxisFill、E_BehindAxis、D_BehindCurves、C_BehindAxisBorder、B_BehindLegend和A_InFront。具體的解釋如
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Member Name
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Description
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G_BehindAll
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F_BehindAxisFill
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E_BehindAxis
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D_BehindCurves
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C_BehindAxisBorder
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B_BehindLegend
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A_InFront
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Member Name
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Description
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G_BehindAll
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F_BehindAxisFill
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E_BehindAxis
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D_BehindCurves
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C_BehindAxisBorder
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B_BehindLegend
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A_InFront
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