string ldt_picPath = System.Windows.Forms.Application.StartupPath + @"Pic\" + ItemName + @"\" + KeMuName + @"\" + ExamCode + @"\";

            Chart Chart3 = new Chart();

            ChartArea chartArea1 = new ChartArea();

            Chart3.Width = ;

            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.Add(chartArea1);

            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 = null;//数值

            string[] xValues = null;//标签

            DataTable bz = Data.SQL_zl.getBzjg();

            if (bz.Rows.Count > )

            {

                yValues = new double[bz.Rows.Count];

                xValues = new string[bz.Rows.Count];

                for (int i = ; i < bz.Rows.Count; i++)

                {

                    string dj = bz.Rows[i]["dj"].ToString();

                    xValues[i] = dj;

                    DataTable dt = Data.SQL_zl.Get_GRZhiLiang(KeMuName, dj);

                    if (dt.Rows.Count > )

                    {

                        yValues[i] = Convert.ToDouble(dt.Rows[]["jgC"].ToString());

                    }

                }

            }

            //饼状图的标签方位

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

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

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

            //图例说明

            Legend leg = new Legend();

            Chart3.Legends.Add(leg);

            //每个部分开花

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

            {

                point["Exploded"] = "true";

            }

            Chart3.SaveImage(ldt_picPath + "4.jpg", ChartImageFormat.Jpeg);