MVC框架下的图表使用（二）

时间：2010-08-17 来源：我不是冷狐冲，我就是一酒壶

这次来说说Area图的设置，还是以书店数据库为例，下面就列出2008年，2009年每个季度的收益对比

效图果如下：

　　代码如下，对一些属性做了注释，有兴趣的同学可以试试

代码 System.Web.UI.DataVisualization.Charting.Chart Chart1 = new System.Web.UI.DataVisualization.Charting.Chart();
                        Chart1.Width = 500;
                        Chart1.Height = 296;
                        Chart1.RenderType = RenderType.ImageTag;
                        Chart1.Palette = ChartColorPalette.BrightPastel;
                        Chart1.BackGradientStyle = GradientStyle.TopBottom;

                        //设置2008年的数据
                        double[] yValues = { 30, 75, 60, 100};
                        string[] xValues = { "第一季度", "第二季度", "第三季度", "第四季度" };

                        Series series2008 = new Series();

                        series2008.Name = "2008";
                        Chart1.Series.Add(series2008);
                        Chart1.Series["2008"].Points.DataBindXY(xValues, yValues);
                        Chart1.Series["2008"].ChartType = SeriesChartType.SplineArea;
                        Chart1.Series["2008"].IsValueShownAsLabel = true;                    //是否在图里显示每一项数据
                        Chart1.Series["2008"].MarkerStyle = MarkerStyle.Circle;              //数据项标识图形
                        Chart1.Series["2008"].MarkerColor = System.Drawing.Color.Azure;      //数据项标识颜色


                        //设置2009年的数据
                        double[] yValues1 = { 100, 50, 120, 30 };
                        string[] xValues1 = { "第一季度", "第二季度", "第三季度", "第四季度" };
                        Series series2009 = new Series();

                        series2009.Name = "2009";
                        Chart1.Series.Add(series2009);
                        Chart1.Series["2009"].Points.DataBindXY(xValues1, yValues1);
                        Chart1.Series["2009"].ChartType = SeriesChartType.SplineArea;
                        Chart1.Series["2009"].IsValueShownAsLabel = true;
                        Chart1.Series["2009"].MarkerStyle = MarkerStyle.Circle;
                        Chart1.Series["2009"].MarkerColor = System.Drawing.Color.Black;


                        ChartArea charArea = new ChartArea();

                        charArea.Name = "ChartArea1";

                        Chart1.ChartAreas.Add(charArea);
                        Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = false;

                        Chart1.ChartAreas["ChartArea1"].ShadowColor = System.Drawing.Color.Transparent;
                        Chart1.ChartAreas["ChartArea1"].AxisX.IsMarginVisible = false;

                        //将两组数据设置为同一区域
                        Chart1.Series["2008"].ChartArea = charArea.Name;
                        Chart1.Series["2009"].ChartArea = charArea.Name;


                        Legend legend = new Legend();

                        Chart1.Legends.Add(legend);

                        // Render chart control
                        Chart1.Page = this.Parent.Page;
                        HtmlTextWriter writer = new HtmlTextWriter(this.Parent.Page.Response.Output);
                        Chart1.RenderControl(writer);

　　　　好了，下次帖点高级的，关于drilldown功能