如何使用C＃将工具提示添加到BoxPlot图表

Question

I have created box plot chart dynamically but would like to add a tooltip to the box plot chart so that when user mouse over the box plot series, the box plot series values will be displayed out in tooltip.

This is my code to create box plot chart:

                        Chart Chart1= new Chart();
                        Chart1.DataSource = dt;
                        Chart1.Width = 800;
                        Chart1.Height = 490;

                        Chart1.Series.Add(new Series());
                        Chart1.Series[0].ChartType = SeriesChartType.BoxPlot;
                        Chart1.Series.Add(new Series());
                        Chart1.Series[1].ChartType = SeriesChartType.Point;
                        List<object> List1 = dt.AsEnumerable().ToList<object>();

                        int Chart1_AVG = 0;
                        int Chart1_POINTINDEX = 0;

                        foreach (DataRow row in dt.Rows)
                        {
                            Chart1_AVG = (int)row["AVG"];

                            Chart1.Series[0].Points.AddXY(row["CUSTOMER"], new object[] { row["MIN"], row["MAX"], row["25TH_PCT_NUMBER"], row["75TH_PCT_NUMBER"], row["50TH_PCT_NUMBER"], row["AVG"] });
                            Chart1_POINTINDEX = Chart1.Series[1].Points.AddXY(row["CUSTOMER"], new object[] { row["AVG"] });

                            if ((Chart1_AVG >= AvgMinColorGreen) && (Chart1_AVG <= AvgMaxColorGreen))
                            {
                                Chart1.Series[1].Points[Chart1_POINTINDEX].MarkerColor = Color.Green;
                            }
                            else if ((Chart1_AVG >= AvgMinColorYellow) && (Chart1_AVG <= AvgMaxColorYellow))
                            {
                                Chart1.Series[1].Points[Chart1_POINTINDEX].MarkerColor = Color.Orange;
                            }
                            else if ((Chart1_AVG >= AvgMinColorRed) && (Chart1_AVG <= AvgMaxColorRed))
                            {
                                Chart1.Series[1].Points[Chart1_POINTINDEX].MarkerColor = Color.Red;
                            }
                        }
                        Chart1.Series[0]["BoxPlotShowMedian"] = "false"; //hide the average point

                        //create chartareas
                        ChartArea ca= new ChartArea();

                        //databind
                        Chart1.DataBind();
                        Chart1.Visible = true;

                        panel.Controls.Add(Chart1);

Please help me on this, thanks.

Answer 1

Use this

Chart1.Series[0].ToolTip = "#VAL"

Other possible tooltips are LegendToolTip, LabelToolTip ...

For keywords see https://msdn.microsoft.com/de-de/library/vstudio/dd456687%28v=vs.110%29.aspx