<asp:Chart ID="Chart3" runat="server" Width="900px">

                             <Legends>

                                 <asp:Legend BackColor="Transparent" Alignment="Center" Font="Trebuchet MS, 8.25pt, style=Bold"

                                     IsTextAutoFit="False" Name="Default" LegendStyle="Column">

                                 </asp:Legend>

                             </Legends>

                             <ChartAreas>

                                 <asp:ChartArea Name="ChartArea1">

                                     <Area3DStyle Rotation="" />

                                     <AxisY LineColor="64, 64, 64, 64">

                                         <LabelStyle Font="Trebuchet MS, 8.25pt, style=Bold" />

                                         <MajorGrid LineColor="64, 64, 64, 64" />

                                     </AxisY>

                                     <AxisX LineColor="64, 64, 64, 64">

                                         <LabelStyle Font="Trebuchet MS, 8.25pt, style=Bold" />

                                         <MajorGrid LineColor="64, 64, 64, 64" />

                                     </AxisX>

                                 </asp:ChartArea>

                             </ChartAreas>

                         </asp:Chart>

             Chart3.BackColor = Color.Moccasin;

             Chart3.BackGradientStyle = GradientStyle.DiagonalRight;

             Chart3.BorderlineDashStyle = ChartDashStyle.Solid;

             Chart3.BorderlineColor = Color.Gray;

             Chart3.BorderSkin.SkinStyle = BorderSkinStyle.Emboss;

             // forma the chart area

             Chart3.ChartAreas[].BackColor = Color.Wheat;

             // add and format the title

             Chart3.Titles.Add("标题");

             Chart3.Titles[].Font = new Font("Utopia", , FontStyle.Bold);

             Chart3.Series.Add(new Series("Pie")

             {

                 ChartType = SeriesChartType.Pie,

                 ShadowOffset =

             });

             Chart3.Series[].Label = "#VALX \n\n #PERCENT{P}";//显示百分比和说明

             Chart3.Series[].LegendText = "#VALX";

             double[] yValues = { , , , , };

             string[] xValues = { "优秀", "不及格", "良好", "及格" };

             //饼状图的标签方位

             Chart3.Series[]["PieLabelStyle"] = "Outside";

             Chart3.Series[]["PieLineColor"] = "Black";

             Chart3.Series[].Points.DataBindXY(xValues, yValues);

             //每个部分开花

             foreach (DataPoint point in Chart3.Series[].Points)

             {

                 point["Exploded"] = "true";

             }

             SaveChartToImg(Chart3, "");