用ZedGraph控件畫統(tǒng)計分析圖

1、用ZedGraph控件畫統(tǒng)計分析圖由于朋友需要把C1WebChart.替換掉,改用開源的ZedGraph控件.以下做一個示例,供大家參考:步驟如下:1、添加ZedGraph控件。如下圖：  2、添加到控制面版。如下圖：3、制作用戶控件。   a>  建立一個命名為： DrawGrap.ascx 用戶控件。   b>  通過控制面版，把ZedGraphWeb拖到默認頁面。 如下圖：    c>   生成代碼(DrawGrap.ascx)如下： 

2、60;        <% Control Language="C#" AutoEventWireup="true" CodeFile="DrawGrap.ascx.cs" Inherits="DrawGrap" %><% Register TagPrefix="zgw" Namespace="Zed

3、Graph.Web" Assembly="ZedGraph.Web" %><ZGW:ZEDGRAPHWEB id="zedGraphControl" runat="server" width="500" Height="375" RenderMode="ImageTag"/>   d>  生成代碼(DrawGrap.ascx.cs)如下：

4、60;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.HtmlCont

5、rols;using System.Drawing;using ZedGraph;using ZedGraph.Web;using System.Collections.Generic;/*/ <summary>/ 顯示統(tǒng)計圖形類型/ </summary>public enum AnalyticsType.    Line,   /折線圖    Bar, 

6、0;  /柱狀圖    Pie     /餅圖;public partial class DrawGrap : System.Web.UI.UserControl.    Private Attribute#region Private Attribute    /*/ <summary> 

7、60;  / 默認顏色種類    / </summary>    private List<Color> defaultColors = new List<Color>();    /*/ <summary>    / 統(tǒng)計的個數(shù)    /&

8、#160;</summary>    private int Count;    #endregion    Public Property#region Public Property    /*/ <summary>    / 統(tǒng)計圖的名稱    / 

9、</summary>    public string Title;    /*/ <summary>    / 橫軸的名稱（餅圖不需要）    / </summary>    public string XAxisTitle;    /*/ 

10、<summary>    / 縱軸的名稱（餅圖不需要）    / </summary>    public string YAxisTitle;    /*/ <summary>    / 顯示的曲線類型：Line,Bar,Pie    / </s

11、ummary>    public AnalyticsType Type;    /*/ <summary>    / 折線圖和柱狀圖的數(shù)據(jù)源    / </summary>    public List<PointPairList> DataSource = new

12、 List<PointPairList>();    /*/ <summary>    / 餅圖的數(shù)據(jù)源    / </summary>    public List<double> ScaleData = new List<double>();   

13、0;/*/ <summary>    / 各段數(shù)據(jù)的顏色    / </summary>    public List<Color> Colors = new List<Color>();    /*/ <summary>    / 各段數(shù)

14、據(jù)的名稱    / </summary>    public List<string> NameList = new List<string>();    /*/ <summary>    / 用于柱狀圖，每個圓柱體表示的含義    / </summary

15、>    public List<string> LabelList = new List<string>();    #endregion    protected void Page_Load(object sender, EventArgs e)    .    

16、    zedGraphControl.RenderGraph += new ZedGraph.Web.ZedGraphWebControlEventHandler(zedGraphControl_RenderGraph);       private void InitDefaultColors()        .   &#

17、160;        defaultColors.Add(Color.Red);            defaultColors.Add(Color.Green);            defaultColors.Add(Color.Blue);  &#

18、160;         defaultColors.Add(Color.Yellow);            defaultColors.Add(Color.YellowGreen);            defaultColors.Add(Color.Brown

19、);            defaultColors.Add(Color.Aqua);            defaultColors.Add(Color.Cyan);            defaultColors.Add(Colo

20、r.DarkSeaGreen);            defaultColors.Add(Color.Indigo);                /*/ <summary>        / 如果屬性為

21、空則初始化屬性數(shù)據(jù)        / </summary>        private void InitProperty()        .            InitDefaultCol

22、ors();            if (string.IsNullOrEmpty(Title)            .                Title = 

23、;"未命名統(tǒng)計圖"                        if (string.IsNullOrEmpty(XAxisTitle)            .    

24、;            XAxisTitle = "橫軸"                        if (string.IsNullOrEmpty(YAxisTitle) 

25、;           .                YAxisTitle = "縱軸"                

26、60;       if (Type = AnalyticsType.Pie)            .                Count = ScaleData.Count; &#

27、160;                      else            .              

28、60; Count = DataSource.Count;                        if (Colors.Count = 0 | Colors.Count != Count)     &#

29、160;      .                Random r = new Random();                int tempIndex 

30、;= 0;                List<int> tempIndexList = new List<int>();                for (int i

31、0;= 0; i < Count; i+)                .                    tempIndex = r.Next(defau

32、ltColors.Count);                    if (tempIndexList.Contains(tempIndex)                    .&

33、#160;                       i-;                         

34、0;              else                    .               

35、;         tempIndexList.Add(tempIndex);                        Colors.Add(defaultColorstempIndex);      &

36、#160;                                                 &

37、#160;   if (NameList.Count = 0)            .                if (Type = AnalyticsType.Bar)    &#

38、160;           .                    for (int i = 0; i < DataSource0.Count; i+)    

39、                .                        NameList.Add("第" + i.ToString() +&

40、#160;"組");                                              

41、0;     else                .                    for (int i = 0; i 

42、;< Count; i+)                    .                        NameList.

43、Add("第" + i.ToString() + "組");                                      &#

44、160;                     if (LabelList.Count = 0)            .         

45、0;      for (int i = 0; i < Count; i+)                .               &#

46、160;    LabelList.Add("含義" + i.ToString();                                    &#

47、160;       /*/ <summary>        / 畫圖        / </summary>        / <param name="webObject">&l

48、t;/param>        / <param name="g"></param>        / <param name="pane"></param>        private void ze

49、dGraphControl_RenderGraph(ZedGraph.Web.ZedGraphWeb webObject, System.Drawing.Graphics g, ZedGraph.MasterPane pane)        .            InitProperty();    &

50、#160;       GraphPane myPane = pane0;            myPane.Title.Text = Title;            myPane.XAxis.Title.Text =

51、60;XAxisTitle;            myPane.YAxis.Title.Text = YAxisTitle;            /if (true)            / &

52、#160;          /    DrawMessage(myPane, "yiafdhaskjhfasfksahfasdlhfaslf lasgfasglgsadi");            /    pane.AxisChange(g); 

53、;           /    return;            /            switch (Type)      &#

54、160;     .                case AnalyticsType.Line:                    DrawLine(myPane);

55、60;                   break;                case AnalyticsType.Bar:         

56、;           DrawBar(myPane);                    break;               &

57、#160;case AnalyticsType.Pie:                    DrawPie(myPane);                    break; 

58、;               default:                    break;            

59、60;           pane.AxisChange(g);                Draw#region Draw        /*/ <summary>    

60、;    / 畫折線圖        / </summary>        / <param name="graphPane"></param>        private void DrawLine

61、(GraphPane graphPane)        .            for (int i = 0; i < Count; i+)            . &

62、#160;              graphPane.AddCurve(NameListi, DataSourcei, Colorsi, SymbolType.None);                     &

63、#160;      /*/ <summary>        / 畫柱狀圖        / </summary>        / <param name="graphPane"></

64、param>        private void DrawBar(GraphPane graphPane)        .            for (int i = 0; i < Count;&#

65、160;i+)            .                graphPane.AddBar(LabelListi, DataSourcei, Colorsi).Bar.Fill = new Fill(Colorsi, Color.White,&#

66、160;Colorsi);                        graphPane.XAxis.MajorTic.IsBetweenLabels = true;            string l

67、abels = NameList.ToArray();            graphPane.XAxis.Scale.TextLabels = labels;            graphPane.XAxis.Type = AxisType.Text;   &#

68、160;        graphPane.Fill = new Fill(Color.White, Color.FromArgb(200, 200, 255), 45.0f);            graphPane.Chart.Fill = new Fill(Color.White, 

69、;Color.LightGoldenrodYellow, 45.0f);                /*/ <summary>        / 畫餅圖        / </summary> 

70、0;      / <param name="graphPane"></param>        private void DrawPie(GraphPane graphPane)        .       &

71、#160;    graphPane.Fill = new Fill(Color.White, Color.Silver, 45.0f);            graphPane.Legend.Position = LegendPos.Float;          

72、  graphPane.Legend.Location = new Location(0.95f, 0.15f, CoordType.PaneFraction, AlignH.Right, AlignV.Top);            graphPane.Legend.FontSpec.Size = 20f;     

73、;       graphPane.Legend.IsHStack = false;            for (int i = 0; i < Count; i+)           &#

74、160;.                graphPane.AddPieSlice(ScaleDatai, Colorsi, Color.White, 45f, 0, NameListi);                

75、60;           /*/ <summary>        / 如果系統(tǒng)出錯，顯示錯誤信息        / </summary>        / <param

76、0;name="graphPane"></param>        / <param name="message"></param>        private void DrawMessage(GraphPane graphPane, string message) &#

77、160;      .            TextObj text = new TextObj(message, 200, 200);            text.Text = message; 

78、60;          graphPane.GraphObjList.Add(text);                #endregion      e>  用戶控件制作完成。4、對控件的使用。  a>  創(chuàng)建測試頁面(DrawGrap.as

79、px)  b> 把用戶控件DrawGrap.ascx 拖到默認的測試頁面上(DrawGrap.aspx)  c> 后臺代碼如下： 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.WebContr

80、ols;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class DrawGrap : System.Web.UI.Page.    protected void Page_Load(object sender, EventArgs e)    . 

81、0;      /柱狀圖        DrawBar();        /餅圖        /DrawPie();        /曲線圖      &#

82、160; /DrawLine();        private void DrawBar()    .        DrawGrap1.Type = AnalyticsType.Bar;        DrawGrap1.Title = &quo

83、t;用戶訪問柱狀圖"        DrawGrap1.XAxisTitle = "月份"        DrawGrap1.YAxisTitle = "用戶訪問數(shù)量"        Random rand = new Rando

84、m();        for (int i = 0; i < 6; i+)        .            ZedGraph.PointPairList ppl = new ZedGr

85、aph.PointPairList();            for (int j = 0; j < 3; j+)            .           

86、     double x = rand.Next(10);                double y = rand.NextDouble() * 1000;                ppl.Add(x, y);                        DrawGrap1.DataSourc