C# GraphPane.AddPieSlice方法代码示例

        public MultiPieChartDemo()
            : base("A Demo of the MasterPane with Pie Charts",
			"Multi-Pie Chart Demo", DemoType.General, DemoType.Special)
        {
            MasterPane myMaster = base.MasterPane;
            // Remove the default GraphPane that comes with ZedGraphControl
            myMaster.PaneList.Clear();

            // Set the master pane title
            myMaster.Title.Text = "Multiple Pie Charts on a MasterPane";
            myMaster.Title.IsVisible = true ;

            // Fill the masterpane background with a color gradient
            myMaster.Fill = new Fill( Color.White, Color.MediumSlateBlue, 45.0F );

            // Set the margins and the space between panes to 10 points
            myMaster.Margin.All = 10;
            myMaster.InnerPaneGap = 10;

            // Enable the masterpane legend
            myMaster.Legend.IsVisible = true ;
            myMaster.Legend.Position = LegendPos.TopCenter;
            myMaster.IsUniformLegendEntries = true;

            // Enter some data values
            double [] values = { 15, 15, 40, 20 } ;
            double [] values2 = { 250, 50, 400, 50 } ;
            Color [] colors = { Color.Red, Color.Blue, Color.Green, Color.Yellow } ;
            double [] displacement = { .0,.0,.0,.0 } ;
            string [] labels = { "East", "West", "Central", "Canada" } ;

            // Create some GraphPanes
            for ( int x=0; x<3; x++ )
            {
                // Create the GraphPane
                GraphPane myPane = new GraphPane();
                myPane.Title.Text = "2003 Regional Sales";

                // Fill the pane background with a solid color
                myPane.Fill = new Fill( Color.Cornsilk );
                // Fill the axis background with a solid color
                myPane.Chart.Fill = new Fill( Color.Cornsilk );

                // Hide the GraphPane legend
                myPane.Legend.IsVisible = false	 ;

                // Add some pie slices
                PieItem segment1 = myPane.AddPieSlice( 20, Color.Blue, .10, "North" );
                PieItem segment2 = myPane.AddPieSlice( 40, Color.Red, 0, "South" );
                PieItem segment3 = myPane.AddPieSlice( 30, Color.Yellow, .0, "East" );
                PieItem segment4 = myPane.AddPieSlice( 10.21, Color.Green, .20, "West" );
                PieItem segment5 = myPane.AddPieSlice( 10.5, Color.Aquamarine, .0, "Canada" );
                segment1.LabelType = PieLabelType.Name_Value;
                segment2.LabelType = PieLabelType.Name_Value;
                segment3.LabelType = PieLabelType.Name_Value;
                segment4.LabelType = PieLabelType.Name_Value;
                segment5.LabelType = PieLabelType.Name_Value;

                // Add the graphpane to the masterpane
                myMaster.Add( myPane );
            }

            // Tell ZedGraph to auto layout the graphpanes
            using ( Graphics g = this.ZedGraphControl.CreateGraphics() )
            {
                myMaster.SetLayout( g, PaneLayout.ExplicitRow12 );
                myMaster.AxisChange( g );
                //g.Dispose();
            }
        }

 /// <summary>
 /// Creates a pie chart from a JSON request.
 /// </summary>
 /// <param name="query">Query batch.</param>
 /// <param name="_options">GraphOptions.</param>
 /// <param name="binaryOutput">if set to <c>true</c> the image will output in the response stream.</param>
 /// <returns></returns>
 public static System.Drawing.Bitmap PieChart( string query, Dictionary<string, object> _options, bool binaryOutput )
 {
     ( "FUNCTION /w binaryStream pieChart" ).Debug( 10 );
     /* query expects two columns
         * 0 name
         * 1 value
         * 2 color1 (or null)
         * 3 color2 (or null)
         */
     JToken jtOpt = JToken.FromObject( _options );
     JsonSerializer serializer = new JsonSerializer();
     GraphOptions options = ( GraphOptions )serializer.Deserialize( new JTokenReader( jtOpt ), typeof( GraphOptions ) );
     if( options.Width == 0 || options.Height == 0 ) {
         /*bad image size defined */
         return null;
     }
     System.Drawing.Bitmap image = null;
     GraphPane myPane = null;
     using(SqlConnection cn = Site.CreateConnection(true, true)) {
         cn.Open();
         try {
             using(SqlCommand cmd = new SqlCommand(query, cn)) {
                 myPane = new GraphPane(new System.Drawing.Rectangle(0, 0, options.Width, options.Height), options.Title, "", "");
                 // Set the GraphPane title
                 myPane.Title.Text = options.Title;
                 myPane.Title.FontSpec.IsItalic = options.IsItalic;
                 myPane.Title.FontSpec.Size = options.TitleFontSize;
                 myPane.Title.FontSpec.Family = options.FontFamily;
                 System.Drawing.Color fill1 = System.Drawing.Color.FromName(options.Fill.StartColor);
                 System.Drawing.Color fill2 = System.Drawing.Color.FromName(options.Fill.EndColor);
                 // Fill the pane background with a color gradient
                 myPane.Fill = new Fill(fill1, fill2, options.Fill.Angle);
                 // No fill for the chart background
                 myPane.Chart.Fill.Type = FillType.None;
                 // Set the legend to an arbitrary location
                 myPane.Legend.IsVisible = options.ShowLegend;
                 myPane.Legend.Position = LegendPos.Float;
                 myPane.Legend.Location = new Location(0.95f, 0.15f, CoordType.PaneFraction, AlignH.Right, AlignV.Top);
                 myPane.Legend.FontSpec.Size = 10f;
                 myPane.Legend.IsHStack = false;
                 List<PieItem> segments = new List<PieItem>();
                 using(SqlDataReader r = cmd.ExecuteReader()) {
                     while(r.Read()) {
                         System.Drawing.Color color1 = System.Drawing.Color.FromName(r.GetString(2));
                         System.Drawing.Color color2 = System.Drawing.Color.FromName(r.GetString(3));
                         PieItem s = myPane.AddPieSlice(Convert.ToDouble(r.GetValue(1)), color1, color2, 45f, 0, r.GetString(0));
                         if(r.GetValue(1).GetType() == typeof(decimal)) {
                             s.Label.Text = r.GetString(0) + ' ' + r.GetDecimal(1).ToString(options.NodeLabelFormat);
                         } else {
                             s.Label.Text = s.Label.Text = r.GetString(0) + ' ' + Convert.ToString(r.GetValue(1));
                         }
                         segments.Add(s);
                     }
                 }
             }
             // Sum up the pie values
             CurveList curves = myPane.CurveList;
             double total = 0;
             for(int x = 0; x < curves.Count; x++)
                 total += ((PieItem)curves[x]).Value;
             // Calculate the Axis Scale Ranges
             myPane.AxisChange();
             image = myPane.GetImage(true);
         } catch(Exception ex) {
             if(image == null) {
                 image = new Bitmap(700, 700);
             }
             image = WriteImageError(image, ex.Message, "Arial", 8f);
         }
         if(binaryOutput) {
             using(MemoryStream ms = new MemoryStream()) {
                 image.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
                 if(HttpContext.Current != null) {
                     HttpContext.Current.Response.Clear();
                     HttpContext.Current.Response.ContentType = "image/png";
                     HttpContext.Current.Response.AddHeader("Expires", "0");/* RFC 2616 14.21 Content has already expired */
                     HttpContext.Current.Response.AddHeader("Cache-Control", "no-store");/* RFC 2616 14.9.2 Don't ever cache */
                     HttpContext.Current.Response.AddHeader("Pragma", "no-store");/* RFC 2616 14.32 Pragma - same as cache control */
                     ms.WriteTo(HttpContext.Current.Response.OutputStream);
                 }
             }
             image.Dispose();
             if(HttpContext.Current != null) {
                 HttpContext.Current.Response.Flush();
                 HttpContext.Current.ApplicationInstance.CompleteRequest();
             }
         }
     }
     return image;
 }

//.........这里部分代码省略.........
            HSSFWorkbook workbook = facade.InitializeWorkbook("杭州农副产品物流网络有限公司", logic.sysAdmin.AdminID.ToString(), "采购配送系统", "投诉管理");
            Sheet sheet1 = workbook.CreateSheet("投诉详细");
            facade.CreateRowHeader(workbook, sheet1, TimeRange + " 投诉列表", dtlist);
            facade.FillRowData(workbook, sheet1, 2, dtlist, null, null, null, null);
            Sheet sheet2 = workbook.CreateSheet("客户投诉");
            facade.CreateRowHeader(workbook, sheet2, TimeRange + " 客户投诉情况", dtcompany);
            facade.FillRowData(workbook, sheet2, 2, dtcompany, null, null, null, null);
            Sheet sheet3 = workbook.CreateSheet("投诉汇总");
            facade.CreateRowHeader(workbook, sheet3, TimeRange + " 投诉问题汇总", dtcomplaint);
            facade.FillRowData(workbook, sheet3, 2, dtcomplaint, null, null, null, null);
            #region 小类投诉情况
            GraphPane graphpane = new GraphPane();
            graphpane.Title.Text = "小类投诉情况";
            graphpane.Title.FontSpec.Size = 12f;
            graphpane.XAxis.Title.Text = "小类";
            graphpane.XAxis.Title.FontSpec.Size = 11f;
            graphpane.YAxis.Title.Text = ChangeStr("投诉数量");
            graphpane.YAxis.Title.FontSpec.Angle = 90;
            graphpane.YAxis.Title.FontSpec.Size = 11f;
            graphpane.XAxis.IsVisible = true;
            graphpane.YAxis.IsVisible = true;
            List<string> category=new List<string>();
            List<double> cnum = new List<double>();
            int maxcnum = 2;
            foreach (DataRow dr in dtcategory.Rows)
            {
                if(Convert.ToInt32( dr[1].ToString())>maxcnum)
                    maxcnum=Convert.ToInt32( dr[1].ToString());
                category.Add(ChangeStr( dr[0].ToString()));
                cnum.Add(Convert.ToDouble(dr[1].ToString()));
            }

            BarItem baritem = graphpane.AddBar(null,null,cnum.ToArray(), Color.Red);
            baritem.Bar.Fill = new Fill(Color.Red, Color.White, Color.Red);
            BarItem.CreateBarLabels(graphpane, false, "f0");
            graphpane.XAxis.Scale.TextLabels = category.ToArray();
            graphpane.XAxis.Scale.Max = category.ToArray().Length+1;
            graphpane.XAxis.Scale.MajorStep = 1;
            graphpane.XAxis.MinorTic.Size = 0;
            graphpane.XAxis.MajorTic.Size = 0;
            graphpane.XAxis.Cross = 0;
            graphpane.XAxis.Scale.FontSpec.Size = 10f;
            graphpane.XAxis.Scale.FontSpec.Family = "宋体";
            graphpane.XAxis.Type = AxisType.Text;
            graphpane.XAxis.MajorTic.IsOutside = false;
            graphpane.XAxis.MajorTic.IsOpposite = false;
            graphpane.YAxis.Scale.Max = maxcnum+2;
            graphpane.YAxis.MinorTic.Size = 0;
            graphpane.YAxis.MinorGrid.DashOff = 0;
            graphpane.YAxis.Scale.MajorStep = 1;
            graphpane.YAxis.MajorTic.IsOpposite = false;
            graphpane.YAxis.MajorTic.IsOutside = false;
            graphpane.Chart.Fill = new Fill(Color.White, Color.FromArgb(255, 255, 166), 90F);
            graphpane.Fill = new Fill(Color.White, Color.FromArgb(250, 250, 255),45.0f);
            graphpane.Fill.IsScaled = true;
            MemoryStream ms = new MemoryStream();
            //zgc.GetImage().Save(ms,System.Drawing.Imaging.ImageFormat.Jpeg);
            Bitmap map = graphpane.GetImage(750,550,17);
            map.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
            byte[] picbyte = ms.ToArray();
            int index = workbook.AddPicture(picbyte, NPOI.SS.UserModel.PictureType.JPEG);
            Sheet sheet4 = workbook.CreateSheet("小类投诉");
            facade.CreateRowHeader(workbook, sheet4, TimeRange + " 小类投诉情况", dtcategory);
            facade.FillRowData(workbook, sheet4, 2, dtcategory, null, null, null, null);
            HSSFPatriarch hssfpatriarch = (HSSFPatriarch)sheet4.CreateDrawingPatriarch();
            HSSFClientAnchor hssfanchor = new HSSFClientAnchor(0, 0, 0, 0, 4, 1, 18, 28);
            HSSFPicture hssfpic = (HSSFPicture)hssfpatriarch.CreatePicture(hssfanchor, index);
            #endregion
            #region 部门投诉情况
            GraphPane gp2 = new GraphPane();
            gp2.Title.Text = "部门投诉情况";
            gp2.XAxis.IsVisible = false;
            gp2.YAxis.IsVisible = false;
            gp2.Title.FontSpec.Size = 12f;
            gp2.Fill = new Fill(Color.White);
            gp2.Chart.Fill.Type = FillType.None;
            gp2.Legend.Position = LegendPos.Float;
            gp2.Legend.Location = new Location(0.95f, 0.08f, CoordType.PaneFraction, AlignH.Right, AlignV.Top);
            gp2.Legend.FontSpec.Size = 10f;
            gp2.Legend.IsHStack = false;
            List<double> comnum=new List<double>();
            List<string> dname=new List<string>();
            foreach(DataRow dr in dtdepartment.Rows )
            {
                gp2.AddPieSlice(Convert.ToDouble(dr[1].ToString()), GetRandomColor(), 0, dr[0].ToString()+" ("+dr[1].ToString()+")").LabelType=PieLabelType.Percent;
            }
            Bitmap bitmap = gp2.GetImage(700, 700, 14);
            MemoryStream mstream = new MemoryStream();
            bitmap.Save(mstream, System.Drawing.Imaging.ImageFormat.Jpeg);
            byte[] buffer = mstream.ToArray();
            int picindex = workbook.AddPicture(buffer, NPOI.SS.UserModel.PictureType.JPEG);
            Sheet sheet5 = workbook.CreateSheet("部门投诉");
            facade.CreateRowHeader(workbook, sheet5, TimeRange + " 责任部门投诉情况", dtdepartment);
            facade.FillRowData(workbook, sheet5, 2, dtdepartment, null, null, null, null);
            HSSFPatriarch patriarch = (HSSFPatriarch)sheet5.CreateDrawingPatriarch();
            HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 0, 4, 1, 15, 34);
            HSSFPicture pic = (HSSFPicture)patriarch.CreatePicture(anchor, picindex);
            #endregion
            facade.ExportByWeb(workbook, TimeRange.ToString() + "采购配送系统投诉统计", TimeRange.ToString() + "采购配送系统投诉统计.xls");
        }

        private void GenerateDistributionGraphAndTable()
        {
            #region Write graph
            GraphPane graphPane = new GraphPane(new Rectangle(0, 0, 512, 384), "", "", "");
            graphPane.CurveList.Clear();
            graphPane.Legend.Position = LegendPos.Right;
            graphPane.Legend.IsVisible = false;

            ArrayList groups = statsEngine.GetClusteredDataSet();
            PieItem []segments = new PieItem[groups.Count];
            for (int idx = 0; idx < groups.Count; idx++)
            {
                ArrayList items = groups[idx] as ArrayList;
                string start = string.Format("{0:f2}", items[0]);
                string end = string.Format("{0:f2}", items[items.Count-1]);
                string label =  start + " - " + end;
                int colorseg = 255 - ((255 / groups.Count) * (idx+1));
                segments[idx] = graphPane.AddPieSlice(items.Count, Color.FromArgb(colorseg, colorseg, colorseg), 0.0, label);
                segments[idx].LabelDetail.FontSpec.Border.IsVisible = false;
                segments[idx].LabelType = PieLabelType.Name_Value_Percent;
            }

            SaveGraphImage(graphPane, reportPath + @"\distribution.png");
            #endregion

            #region Write table
            // write table header
            distTable = new StringBuilder();
            distTable.Append("<table><thead><tr>\n");
            distTable.Append("<th width=\"20%\">Group</th>\n");
            distTable.Append("<th width=\"20%\">Range in milliseconds</th>\n");
            distTable.Append("<th width=\"20%\">Total tests</th>\n");
            distTable.Append("<th width=\"20%\">Percent of total</th>\n");
            distTable.Append("</tr></thead><tbody>\n");

            int totalEntries = 0;
            for (int i=0; i<groups.Count; i++)
            {
                ArrayList items = groups[i] as ArrayList;
                totalEntries += items.Count;
            }

            bool oddline = true;
            for (int i=0; i<groups.Count; i++)
            {
                ArrayList items = groups[i] as ArrayList;
                string start = string.Format("{0:f2}", items[0]);
                string end = string.Format("{0:f2}", items[items.Count-1]);
                string label =  start + " - " + end;

                if (oddline == true)
                    distTable.Append("<tr class=\"odd\">\n");
                else
                    distTable.Append("<tr class=\"even\">\n");

                distTable.Append("<td class=\"s\">");
                distTable.AppendFormat("{0}", i+1);
                distTable.Append("</td>\n");

                distTable.Append("<td class=\"s\">");
                distTable.Append(label);
                distTable.Append("</td>\n");

                distTable.Append("<td class=\"s\">");
                distTable.AppendFormat("{0}", items.Count);
                distTable.Append("</td>\n");

                double percent = 100 - (((double)(totalEntries - items.Count) / (double)totalEntries) * 100.0);
                distTable.Append("<td class=\"s\">");
                distTable.AppendFormat("{0:f2}", percent);
                distTable.Append("</td>\n");

                oddline = !oddline;
            }
            distTable.Append("</tr></table>\n");
            #endregion
        }

//.........这里部分代码省略.........

            master.Add( myPaneT );

            Graphics g = this.CreateGraphics();

            master.Title.IsVisible = false;
            master.Margin.All = 0;
            //master.AutoPaneLayout( g, PaneLayout.ExplicitRow32 );
            //master.AutoPaneLayout( g, 2, 4 );
            master.AutoPaneLayout( g );
            //master.AutoPaneLayout( g, false, new int[] { 1, 3, 2 }, new float[] { 2, 1, 3 } );
            master.AxisChange( g );

            g.Dispose();
            #endif

            #if false	// Pie
            myPane = new GraphPane( new Rectangle( 10, 10, 10, 10 ),
                "2004 ZedGraph Sales by Region\n($M)",
                "",
                "" );

            myPane.FontSpec.IsItalic = true;
            myPane.FontSpec.Size = 24f;
            myPane.FontSpec.Family = "Times";
            myPane.PaneFill = new Fill( Color.White, Color.Goldenrod, 45.0f );
            myPane.Chart.Fill.Type = FillType.None;
            myPane.Legend.Position = LegendPos.Float ;
            myPane.Legend.Location = new Location( 0.95f, 0.15f, CoordType.PaneFraction,
                                AlignH.Right, AlignV.Top );
            myPane.Legend.FontSpec.Size = 10f;
            myPane.Legend.IsHStack = false;

            PieItem segment1 = myPane.AddPieSlice( 20, Color.Navy, Color.White, 45f, 0, "North" );
            PieItem segment3 = myPane.AddPieSlice( 30, Color.Purple, Color.White, 45f, .0, "East" );
            PieItem segment4 = myPane.AddPieSlice( 10.21, Color.LimeGreen, Color.White, 45f, 0, "West" );
            PieItem segment2 = myPane.AddPieSlice( 40, Color.SandyBrown, Color.White, 45f, 0.2, "South" );
            PieItem segment6 = myPane.AddPieSlice( 250, Color.Red, Color.White, 45f, 0, "Europe" );
            PieItem segment7 = myPane.AddPieSlice( 50, Color.Blue, Color.White, 45f, 0.2, "Pac Rim" );
            PieItem segment8 = myPane.AddPieSlice( 400, Color.Green, Color.White, 45f, 0, "South America" );
            PieItem segment9 = myPane.AddPieSlice( 50, Color.Yellow, Color.White, 45f, 0.2, "Africa" );

            segment2.LabelDetail.FontSpec.FontColor = Color.Red ;

            CurveList curves = myPane.CurveList ;
            double total = 0 ;
            for ( int x = 0 ; x <  curves.Count ; x++ )
                total += ((PieItem)curves[x]).Value ;

            TextItem text = new TextItem( "Total 2004 Sales\n" + "$" + total.ToString () + "M",
                                0.18F, 0.40F, CoordType.PaneFraction );
            text.Location.AlignH = AlignH.Center;
            text.Location.AlignV = AlignV.Bottom;
            text.FontSpec.Border.IsVisible = false ;
            text.FontSpec.Fill = new Fill( Color.White, Color.FromArgb( 255, 100, 100 ), 45F );
            text.FontSpec.StringAlignment = StringAlignment.Center ;
            myPane.GraphItemList.Add( text );

            TextItem text2 = new TextItem( text );
            text2.FontSpec.Fill = new Fill( Color.Black );
            text2.Location.X += 0.008f;
            text2.Location.Y += 0.01f;
            myPane.GraphItemList.Add( text2 );

            myPane.AxisChange( this.CreateGraphics() );
            #endif