ZedGraphWeb 图表例子

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using ZedGraph;

using ZedGraph.Web;

using System.Drawing;

public partial class _Default : System.Web.UI.Page

{

string typesign = "";

protected void Page_Load(object sender, EventArgs e)

{

this.ZedGraphWeb1.RenderGraph += new ZedGraph.Web.ZedGraphWebControlEventHandler(this.OnRenderGraph);//注册事件

typesign = "line";

}

// Call this method from the Form_Load method, passing your ZedGraphControl

private void OnRenderGraph(ZedGraphWeb zgw, Graphics g, MasterPane masterPane)

{

// 初始化画图面版

GraphPane myPane = masterPane[0];

if (typesign == "bar")

{

// 画图面版标题

myPane.Title.Text = "收入统计";

// 画图面版X标题

myPane.XAxis.Title.Text = "区域";

//初始化数据

PointPairList list = new PointPairList();

PointPairList list2 = new PointPairList();

PointPairList list3 = new PointPairList();

Random rand = new Random();

double total = 0;

for (double x = 0; x < 5; x += 1.0)

{

double y = rand.NextDouble() * 100;

double y2 = rand.NextDouble() * 100;

double y3 = rand.NextDouble() * 100;

list.Add(x, y);

list2.Add(x, y2);

list3.Add(x, y3);

total += y;

}

// 画图面版Y标题

myPane.YAxis.Title.Text = "销售总额:" + total.ToString("F") + " 元";

//柱的画笔

// public BarItem AddBar(string 名称, IPointList 数据, Color 颜色);

BarItem myCurve = myPane.AddBar("收入", list, Color.Blue);

myCurve.Bar.Fill = new Fill(Color.Blue, Color.White, Color.Blue);

BarItem myCurve2 = myPane.AddBar("买农药", list2, Color.Red);

myCurve2.Bar.Fill = new Fill(Color.Red, Color.White, Color.Red);

BarItem myCurve3 = myPane.AddBar("买化肥", list3, Color.Green);

myCurve3.Bar.Fill = new Fill(Color.Green, Color.White, Color.Green);

myPane.XAxis.MajorTic.IsBetweenLabels = true;

//XAxis标注

string[] labels = { "橘子", "西瓜", "梨", "桃子", "枣子" };

myPane.XAxis.Scale.TextLabels = labels;

myPane.XAxis.Type = AxisType.Text;

//图区以外的颜色

myPane.Fill = new Fill(Color.White, Color.FromArgb(200, 200, 255), 45.0f);

//背景颜色

myPane.Chart.Fill = new Fill(Color.Red, Color.LightGoldenrodYellow, 45.0f);

masterPane.AxisChange(g);

}

else if (typesign == "pie")

{

// 设置画版区的标题

myPane.Title.Text = "2007 fruit Sales\n($M)";//\n:换行

//文字是否斜体

myPane.Title.FontSpec.IsItalic = true;

//字体大小

myPane.Title.FontSpec.Size = 24f;

//字体

myPane.Title.FontSpec.Family = "Times New Roman";

// 填充Pane背景颜色和倾斜度

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

// 背景填充类型

myPane.Chart.Fill.Type = FillType.None;

// 设置location

myPane.Legend.Position = LegendPos.Float;

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

AlignH.Right, AlignV.Top);

//slices文字大小

myPane.Legend.FontSpec.Size = 10f;

myPane.Legend.IsHStack = false;

// 添加一切片值

// public PieItem AddPieSlice(double 数据, Color 大圆里的该切片颜色, Color 大圆里的该切片颜色, float fillAngle, double displacement, string label);

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

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

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

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

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

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

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

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

//标签背景颜色

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

// 总额

CurveList curves = myPane.CurveList;

double total = 0;

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

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

// 给Total赋值

TextObj text = new TextObj("Total 2004 Sales\n" + "$" + total.ToString() + "M",

0.18F, 0.40F, CoordType.PaneFraction);

//text的Location设置

text.Location.AlignH = AlignH.Center;

text.Location.AlignV = AlignV.Bottom;

//是否有边框

text.FontSpec.Border.IsVisible = false;

//区域的背景色

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

text.FontSpec.StringAlignment = StringAlignment.Center;

myPane.GraphObjList.Add(text);

// 创建一个阴影区域，看起来有渐变

TextObj text2 = new TextObj(text);

//背景色

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

//text2.Location

text2.Location.X += 0.008f;

text2.Location.Y += 0.01f;

myPane.GraphObjList.Add(text2);

masterPane.AxisChange(g);

}

else if (typesign == "line")

{

//设置标题和x,y坐标的文字

myPane.Title.Text = "Line Graph with Band Demo";

myPane.XAxis.Title.Text = "Sequence";

myPane.YAxis.Title.Text = "Temperature, C";

// 设置初始数据

double[] y = { 100, 115, 75, 22, 98, 40, 10 };

double[] y2 = { 90, 100, 95, 35, 80, 35, 35 };

double[] y3 = { 80, 110, 65, 15, 54, 67, 18 };

double[] x = { 100, 200, 300, 400, 500, 600, 700 };

// 填充axis背景颜色和倾斜度

myPane.Chart.Fill = new Fill(Color.FromArgb(255, 255, 245), Color.FromArgb(255, 255, 190), 90F);

//创建一条红色的线Curve 1

LineItem myCurve = myPane.AddCurve("收入", x, y, Color.Red);

//用红色填充,使符号不透明(可以填充你需要的颜色)

myCurve.Symbol.Fill = new Fill(Color.Red);

// 创建一条Blue色的线Curve 2,"Curve2",你可以改变名称

myCurve = myPane.AddCurve("成本 ", x, y2, Color.Blue);

// Make the symbols opaque by filling them with white

myCurve.Symbol.Fill = new Fill(Color.White);

// 创建一条Green色的线Curve 3,"Curve3",你可以改变名称

myCurve = myPane.AddCurve("时间", x, y3, Color.Green);

// Make the symbols opaque by filling them with white

myCurve.Symbol.Fill = new Fill(Color.White);

//手动设置x axis范围

myPane.XAxis.Scale.Min = 0;

myPane.XAxis.Scale.Max = 800;

// 显示 the Y axis格子线

myPane.YAxis.MajorGrid.IsVisible = true;

myPane.YAxis.MinorGrid.IsVisible = true;

// 显示 the X axis格子线

// myPane.XAxis.MinorGrid.IsVisible = true;

//添加一栏加亮显示区域

//x为基准,y为box的上线,width为box的width,height为box的height,borderColor为边界颜色,fillColor为box的填充颜色

//public BoxObj(double x, double y, double width, double height, Color borderColor, Color fillColor);

BoxObj box = new BoxObj(0, 100, 800, 30, Color.Empty,

Color.FromArgb(150, Color.LightGreen));

box.Fill = new Fill(Color.White, Color.FromArgb(200, Color.LightGreen), 45.0F);

//使用BehindGrid区域,把加加亮显示区域叠在lines之下

box.ZOrder = ZOrder.F_BehindGrid;

myPane.GraphObjList.Add(box);

//添加文本到加亮区域,并对其进行设置(text:要显示的文本,以那为基准(x,y),coordType为什么类型,AlignV设置左右对齐方式,AlignV设置上下对齐方式)

// public TextObj(string text, double x, double y, CoordType coordType, AlignH alignH, AlignV alignV);

TextObj text = new TextObj("基准线", 750, 85, CoordType.AxisXYScale,

AlignH.Right, AlignV.Center);

//是否有背景

text.FontSpec.Fill.IsVisible = false;

//是否有边框

text.FontSpec.Border.IsVisible = false;

//文字是否粗体

text.FontSpec.IsBold = true;

//文字是否斜体

text.FontSpec.IsItalic = true;

//填充

myPane.GraphObjList.Add(text);

}

//保存位置

// ZedGraphWeb1.RenderedImagePath = "~/Image/";

}

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posted on 2008-06-11 09:19 code life 阅读(1003) 评论(0) 收藏举报