BulletGraph(子弹图、项目符号图)

1.概述

• Bullet Graph 是条形图的一种变体
• 弹图具有单一的主要衡量标准（例如，当前年初至今的收入）
• Bullet Graph 在非常紧凑的空间中显示大量数据
• 可用于收入分析和费用分析

2.入门

BulletGraph bullet = new BulletGraph();
bullet.Dock = DockStyle.Fill;
bullet.FlowDirection = BulletGraphFlowDirection.Forward;
bullet.Orientation = Orientation.Horizontal;
bullet.FeaturedMeasure = 4.5;
bullet.ComparativeMeasure = 7;
bullet.LabelFontSize = 10;
bullet.LabelStroke = Color.Black;
bullet.MajorTickStroke = Color.Black;
bullet.Minimum = 0;
bullet.Maximum = 10;
bullet.Interval = 2;
bullet.MinorTicksPerInterval = 3;
bullet.QualitativeRanges.Add(new QualitativeRange() { RangeEnd = 4, RangeCaption = "Bad", RangeStroke = Color.Red });
bullet.QualitativeRanges.Add(new QualitativeRange() { RangeEnd = 7, RangeCaption = "Satisfactory", RangeStroke = Color.Yellow });
bullet.QualitativeRanges.Add(new QualitativeRange() { RangeEnd = 10, RangeCaption = "Good", RangeStroke = Color.Green });
this.Controls.Add(bullet);

3.属性和方法

属性	描述	代码添加	设计器添加
FlowDirection	数值流动的方向(Forward：从小到大；Backward：从大到小)	bullet.FlowDirection = BulletGraphFlowDirection.Forward;
Orientation	方向(横向或纵向)	bullet.Orientation = Orientation.Horizontal;
FeaturedMeasure	特色测量(实际值)	bullet.FeaturedMeasure = 4.5;
FeaturedMeasureBarStroke	特色测量的描边颜色(实际值的线条颜色)	bullet.FeaturedMeasureBarStroke = Color.Red;
ComparativeMeasure	比较度量值（目标数值）	bullet.ComparativeMeasure = 7;
ComparativeMeasureSymbolStroke	比较度量值颜色（目标数值颜色）	bullet.ComparativeMeasureSymbolStroke = Color.Red;
LabelFontSize	标签字体大小(下方刻度大小)	bullet.LabelFontSize = 10;
LabelStroke	标签描边(下方刻度颜色)	bullet.LabelStroke = Color.Black;
Minimum	最小刻度	bullet.Minimum = 0;
Maximum	最大刻度	bullet.Maximum = 10;
Interval	刻度间隔	bullet.Interval = 2;
MinorTicksPerInterval	在主刻度之间显示的次刻度的计数	bullet.MinorTicksPerInterval = 2;
MinorTickSize	次刻度标识的长度	bullet.MinorTickSize = 10;
MinorTickStroke	次要刻度颜色(前提是上一个属性设置>0的值)	bullet.MajorTickStroke = Color.Black;
QuantitativeScaleLength	定量量表的长度	bullet.QuantitativeScaleLength = 400;
QualitativeRangesSize	定量量表的高度	bullet.QualitativeRangesSize = 30;
Caption	描述 BulletGraph 唯一标题	bullet.Caption = “Test”;
CaptionPosition	标题位置(Near：近;Far：远）)	bullet.CaptionPosition=BulletGraphCaptionPosition.Near
BindRangeStrokeToTicks	将刻度线颜色与RangeStroke颜色保持一致	bullet.BindRangeStrokeToTicks = true;
BindRangeStrokeToLabels	将刻度线标签颜色与RangeStroke颜色保持一致	bullet.BindRangeStrokeToLabels = true;
MajorTickSize	主刻度标识的长度	bullet.MajorTickSize = 15;
MajorTickStroke	主刻度颜色	bullet.MajorTickStroke = Color.Red;
TickPosition	刻度标识的位置(Below：下方；Above：上方；Cross：交叉)	bullet.TickPosition = BulletGraphTicksPosition.Cross;
LabelPosition	设置刻度的标签位置(Below：下面；Above：上面)	bullet.LabelPosition = BulletGraphLabelsPosition.Above;
LabelFormat	设置标签格式	bullet.LabelFormat = “#1 K”;
LabelOffset	偏移值(刻度和标签之间的距离)	bullet.LabelOffset = 5;

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• QualitativeRanges 定性范围

bullet.QualitativeRanges.Add(new QualitativeRange() { RangeEnd = 4, RangeCaption = "Bad", RangeStroke = Color.Red });
bullet.QualitativeRanges.Add(new QualitativeRange() { RangeEnd = 7, RangeCaption = "Satisfactory", RangeStroke = Color.Yellow });
bullet.QualitativeRanges.Add(new QualitativeRange() { RangeEnd = 10, RangeCaption = "Good", RangeStroke = Color.Green });

• QualitativeRange 属性

RangeStart： 获取或设置范围起始值
RangeEnd：获取或设置范围结束值
RangeStroke：获取或设置范围笔划颜色
RangeOpacity：获取或设置范围不透明度
RangeCaption：获取或设置范围标题

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文档参考：BulletGraph文档
文档参考：BulletGraph App