彩票走势图

　　学了一段时间ComponentOne的图表，感觉ComponenOne图表控件还可以，图表样式也较丰富，不过它的帮助全是英文的，而且有些地方写的比较粗糙，示例程序也不够详细. 我把它总结了一下.

使用方法        

        1.安装好ComponentOne软件.

  ;       2.建立一个WEB应用程序项目，名称为: TextChart

         3.将ComponentOne软件自带的控件集DLL文件(不一定全部，只把需要的一部分)拷贝到自己刚建的

        ;    项目TextChart的Bin目录下面 (这里要手动放的原因是ComponentOne有时会找不到Dll)  

 ;        4.双击项目里任何一个*.aspx文件，打开设计界面。 打开工具栏，在工具栏空白处右击，选“添加/删除”

             项,打开自定义控件窗口，在.net frame 组件选项卡下选择ComponentOne相应的组件，如果有清楚， 就将所有的C1开头的全部勾选，点“确定按钮".  则ComponentOne的控件就显示在工具箱里面了  :)

         5. 到了这一步，就可以将ComponentOne控件像一般控件一样直接拖动使用了. 拖C1WebChart控件到

            窗体页面上.  然后右击控件，选 "Chart wizard..."就可以为其设置显示的样式(饼图/柱状图/折线图等)和

            属性了，用法跟一般控件差不多。(如果感觉还是陌生的话，请看下面（三）,除了用设计器设置外，

           还可以代码用代码设置)

代码设置

         1. 限于篇幅，只讲解主要的属性

         2.所有的图表样式原理差不多都一样的，这里只讲一下饼图的实现方法

   using C1.Web.C1WebChart;           

//命名空间，必需加入,否则找不到里面的类和方法等
using C1.Web.C1WebChartBase;
using C1.Win.C1Chart;

           protected C1.Web.C1WebChart.C1WebChart C1WebChart1;  

// 控件声明

         1)  <summary>主要属性</summary>

          C1WebChart1.Header.Text="Chart 头";               //图表头标题
          C1WebChart1.Footer.Text="Chart 尾";                 //图表尾文本
          C1WebChart1.BackColor = Color.LightSteelBlue;   //背景色
          C1WebChart1.ImageFormat = System.Drawing.Imaging.ImageFormat.Png;

  //图像存储格式  &nbsp;     ; 

           C1WebChart1.ChartGroups.Group0.ChartType = Chart2DTypeEnum.Bar;  

//图表

    // 类型,Chart2DTypeEnum枚举下有所有的图表样式，如饼图/柱状图等                                                                                                 
  &nbsp;        C1WebChart1.Width=800;     //图表宽度

     &nbsp;    2) <summary>主要方法</summary>

            a .X轴标签(坐标)的方法，直接调用即可

               public void AddAxisX()
               {  
                       // label x axis with product names
                      Axis ax = C1WebChart1.ChartArea.AxisX;
                      ax.ValueLabels.Clear();  
                     ax.AnnoMethod = AnnotationMethodEnum.ValueLabels;
                     for(int i = 0; i < 100; i++)
                     {
                              //DataRowView drv = dv[i];
                             ax.ValueLabels.Add(i, (i+1).ToString());
                     }
                     try
                     {
                             ax.Max = 10 - .5;
                     }
                    catch {}  
                }
       &nbsp;    a .Y轴标签(坐标)的方法，直接调用即可

                public void AddAxisY()
                { 
                      // label y axis with product names
                     Axis ay = C1WebChart1.ChartArea.AxisY;
                    ay.ValueLabels.Clear();  
                   ay.AnnoMethod = AnnotationMethodEnum.ValueLabels;
                    for(int i = 0; i < 10; i++)
                    {
                          //DataRowView drv = dv[i];
                         ay.ValueLabels.Add(i, (50*i).ToString());
                   }
                   try
                    {
                            ay.Max = 20 - .5;
                    }
                   catch {}  
                }

              c.画图表的方法
                public void GetPieData()
                {  
                        C1WebChart1.Legend.Visible = true;  //图表区块注释.
                        this.AddAxisX();   //上面方法a
                        this.AddAxisY();   //上面方法b
   
                        //生成数据
                        PointF[] data = new PointF[10];
                         for (int i = 0; i < data.Length; i++)
                         {
                                 float y = float.Parse((3*i+5).ToString());
                                 data[i] = new PointF(i, y);
                         }    
   
                        //清除现有的饼图
   ChartDataSeriesCollection dscoll =

C1WebChart2.ChartGroups[0].ChartData.SeriesList;   
        &nbsp;               dscoll.Clear();

                       //汇图,即将点数组交给控件，它会自己分配,并画出图形
  ChartDataSeries series = C1WebChart1.ChartGroups[0].ChartData.SeriesList[0];
                        series.PointData.CopyDataIn(data);// 这里的data是PointF类型  
           
                        //给区块加标签
                        for(int i=0; i < data.Length; i++)
                        {
                                ChartDataSeries series = dscoll.AddNewSeries();
                                series.PointData.Length = 1;
                                series.Y[0] = data[i].Y;
  &nbsp;                            series.Label= "我是:"+(i+1).ToString();

                               //加标签
                                C1.Win.C1Chart.Label lbl = C1WebChart1.ChartLabels.LabelsCollection.AddNewLabel();
   lbl.Text = string.Format( "{0} ({1:c})","第:"+i.ToString()+"扇区", data[i].Y);
                                lbl.Compass = LabelCompassEnum.Radial;
                                lbl.Offset = 20;
                                lbl.Connected = true;
                                lbl.Visible = true;
                                lbl.AttachMethod = AttachMethodEnum.DataIndex;
                                AttachMethodData am = lbl.AttachMethodData;
                               am.GroupIndex  = 0;
                              am.SeriesIndex = i;
                              am.PointIndex  = 0;
                          }
 ;                  }