public void BuildPieChart(string fileName, IEnumerable<PieChartItem> data, PieChartContext context)
{
PieChartCreator creator = new PieChartCreator();
creator.BuildChart(fileName, data, context);
}
public void BuildChart(string fileName, IEnumerable<PieChartItem> data, PieChartContext context)
{
if (data == null || data.Count() == 0)
throw new System.FormatException("There is not data to plot.");
using (var targetChart = new Chart()) {
ChartArea mainChartArea = new ChartArea("MainArea");
targetChart.ChartAreas.Add(mainChartArea);
targetChart.ChartAreas[0].Area3DStyle.Enable3D = context.Show3DStyle;
ChartHelper.InitializeChart(targetChart, context.ImageSize);
if (!string.IsNullOrWhiteSpace(context.Title)) {
targetChart.Titles.Add(new Title(context.Title, Docking.Top,
new System.Drawing.Font(context.TitleFontName,
context.TitleFontSize,
System.Drawing.FontStyle.Bold),
context.TitleFontColor));
}
targetChart.Series.Add(context.Title);
targetChart.Series[0].XValueMember = "Label";
targetChart.Series[0].YValueMembers = "Value";
targetChart.DataSource = data;
targetChart.Series[0].IsVisibleInLegend = true;
targetChart.Series[0].ChartType = SeriesChartType.Pie;
targetChart.Series[0].LegendText = "#VALX";
// https://technet.microsoft.com/en-us/library/dd239373.aspx
switch (context.LabelStyle) {
case PieChartLabelStyle.None:
targetChart.Series[0].Label = string.Empty;
targetChart.Series[0].XValueMember = string.Empty;
break;
case PieChartLabelStyle.Value:
targetChart.Series[0].Label = "#VALY";
break;
case PieChartLabelStyle.Percent:
targetChart.Series[0].Label = "#PERCENT{P2}";
break;
case PieChartLabelStyle.ValuePercent:
targetChart.Series[0].Label = "#VALY / #PERCENT{P2}";
break;
case PieChartLabelStyle.Label:
targetChart.Series[0].Label = "#VALX";
break;
case PieChartLabelStyle.LabelValue:
targetChart.Series[0].Label = "#VALX (#VALY)";
break;
case PieChartLabelStyle.LabelPercent:
targetChart.Series[0].Label = "#VALX (#PERCENT{P2})";
break;
case PieChartLabelStyle.LabelValuePercent:
targetChart.Series[0].Label = "#VALX (#VALY / #PERCENT{P2})";
break;
default:
throw new ArgumentOutOfRangeException("LabelStyle");
}
targetChart.Series[0].IsValueShownAsLabel = context.IsValueShownAsLabel;
if (context.IsLabelOutside)
targetChart.Series[0]["PieLabelStyle"] = "Outside";
System.Drawing.Color lineColor = context.LineColor;
targetChart.ChartAreas[0].AxisX.LineColor =
targetChart.ChartAreas[0].AxisY.LineColor =
targetChart.ChartAreas[0].AxisX.InterlacedColor =
targetChart.ChartAreas[0].AxisY.InterlacedColor =
targetChart.ChartAreas[0].AxisX.MajorGrid.LineColor =
targetChart.ChartAreas[0].AxisY.MajorGrid.LineColor =
targetChart.ChartAreas[0].AxisX.TitleForeColor =
targetChart.ChartAreas[0].AxisY.TitleForeColor =
targetChart.ChartAreas[0].AxisX.MajorTickMark.LineColor =
targetChart.ChartAreas[0].AxisY.MajorTickMark.LineColor = lineColor;
ChartHelper.AddLegend(targetChart, ChartHelper.ParseLegendStyle(context.LegendStyle));
targetChart.DataBind();
targetChart.SaveImage(fileName, ChartImageFormat.Png);
}
}
