用zedgraph控件画统计分析图

用 ZedGraph 控件画统计分析图由于朋友需要把 C1WebChart.替换掉, 改用开源的 ZedGraph 控件.以下做一个示例,供大家参考:步骤如下:1、添加 ZedGraph 控件。如下图：2、添加到控制面版。如下图：3、制作用户控件。a 建立一个命名为： DrawGrap.ascx 用户控件。b 通过控制面版，把 ZedGraphWeb 拖到默认页面。 如下图：c 生成代码 (DrawGrap.ascx)如下：d 生成代码(DrawGrap.ascx.cs)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.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Drawing;using ZedGraph;using ZedGraph.Web;using System.Collections.Generic;/ / 显示统计图形类型/ public enum AnalyticsTypeLine, /折线图Bar, /柱状图Pie /饼图;public partial class DrawGrap : System.Web.UI.UserControlPrivate AttributePublic Propertyprotected void Page_Load(object sender, EventArgs e)zedGraphControl.RenderGraph += new ZedGraph.Web.ZedGraphWebControlEventHandler(zedGraphControl_RenderGraph);private void InitDefaultColors()defaultColors.Add(Color.Red);defaultColors.Add(Color.Green);defaultColors.Add(Color.Blue);defaultColors.Add(Color.Yellow);defaultColors.Add(Color.YellowGreen);defaultColors.Add(Color.Brown);defaultColors.Add(Color.Aqua);defaultColors.Add(Color.Cyan);defaultColors.Add(Color.DarkSeaGreen);defaultColors.Add(Color.Indigo);/ / 如果属性为空则初始化属性数据/ private void InitProperty()InitDefaultColors();if (string.IsNullOrEmpty(Title)Title = “未命名统计图 “;if (string.IsNullOrEmpty(XAxisTitle)XAxisTitle = “横轴 “;if (string.IsNullOrEmpty(YAxisTitle)YAxisTitle = “纵轴 “;if (Type = AnalyticsType.Pie)Count = ScaleData.Count;elseCount = DataSource.Count;if (Colors.Count = 0 | Colors.Count != Count)Random r = new Random();int tempIndex = 0;List tempIndexList = new List();for (int i = 0; i / 画图/ / / / private void zedGraphControl_RenderGraph(ZedGraph.Web.ZedGraphWeb webObject, System.Drawing.Graphics g, ZedGraph.MasterPane pane)InitProperty();GraphPane myPane = pane0;myPane.Title.Text = Title;myPane.XAxis.Title.Text = XAxisTitle;myPane.YAxis.Title.Text = YAxisTitle;/if (true)/ DrawMessage(myPane, “yiafdhaskjhfasfksahfasdlhfaslf lasgfasglgsadi“);/ pane.AxisChange(g);/ return;/switch (Type)case AnalyticsType.Line:DrawLine(myPane);break;case AnalyticsType.Bar:DrawBar(myPane);break;case AnalyticsType.Pie:DrawPie(myPane);break;default:break;pane.AxisChange(g);Drawe 用户控件制作完成。4、对控件的使用。a 创建测试页面(DrawGrap.aspx)b 把用户控件 DrawGrap.ascx 拖到默认的测试页面上(DrawGrap.aspx)c 后台代码如下：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.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class DrawGrap : System.Web.UI.Pageprotected void Page_Load(object sender, EventArgs e)/柱状图DrawBar();/饼图/DrawPie();/曲线图/DrawLine();private void DrawBar()DrawGrap1.Type = AnalyticsType.Bar;DrawGrap1.Title = “用户访问柱状图“;DrawGrap1.XAxisTitle = “月份“;DrawGrap1.YAxisTitle = “用户访问数量“;Random rand = new Random();for