Question

尝试在ASP.NET图表中添加交互性时遇到了一些问题。我想在饼图系列中添加点击功能。代码工作正常，但我不确定如何添加点击功能。

 protected void populateCategoryPieChart()
    {
        try
        {
            Chart2.Visible = true;
            Chart2.Titles.Clear();
            string query = string.Format("//sensitive data", Convert.ToInt64(sessionDdl.SelectedValue));
            DataTable dt = getData(query);

            int[] c = new int[dt.Rows.Count];
            string[] x = new string[dt.Rows.Count];
            int[] y = new int[dt.Rows.Count];


            for (int i = 0; i < dt.Rows.Count; i++)
            {
                c[i] = Convert.ToInt32(dt.Rows[i][0]);
                x[i] = obj.getCategoryByID(Convert.ToInt64(dt.Rows[i][0])).Name;
                y[i] = Convert.ToInt32(dt.Rows[i][1]);
            }

            populateCategoryList(c);

            Chart2.Series["Category"].Points.DataBindXY(x, y);
            Chart2.Series["Category"].Label = "#VALX";
            Chart2.Series["Category"].LabelForeColor = Color.Black;
            Chart2.Series["Category"]["PieLabelStyle"] = "Outside";

            Title title = new Title("Most Viewed Category", Docking.Top, new Font("Verdana", 13), Color.Black);
            Chart2.Titles.Add(title);

            Chart2.Legends.Add("Legend1");
            Chart2.Legends[0].Enabled = true;
            Chart2.Legends[0].Docking = Docking.Bottom;
            Chart2.Legends[0].Alignment = StringAlignment.Center;
            Chart2.Series["Category"].LegendText = "#VALX (#PERCENT)";
            Chart2.DataManipulator.Sort(PointSortOrder.Descending, Chart2.Series["Category"]);



            Chart2.Series["Category"].ChartType = SeriesChartType.Pie;
            Chart2.ChartAreas["ChartArea2"].Area3DStyle.Enable3D = true;
            Chart2.Legends[0].Enabled = true;

        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }

我已按照网站documentation中显示的示例进行操作，但它不适合我，并且没有错误消息。

Answer 1

您可以查看此信息，看看它是否符合您的要求：How to create a mouse click event for an item (point) from a Pie chart?

ASP.NET饼图交互性

1 个答案: