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Pie with Custom Labels

Documentation

This demo illustrates how the PieChart widget arranges labels in several columns. To maximize readability, the widget ensures that labels do not overlap one another.

www.nytimes.com
@(Html.DevExtreme().PieChart() .ID("pie") .Palette(VizPalette.Bright) .Title("Olympic Medals in 2008") .Legend(l => l .Orientation(Orientation.Horizontal) .ItemTextPosition(Position.Right) .HorizontalAlignment(HorizontalAlignment.Center) .VerticalAlignment(VerticalEdge.Bottom) .ColumnCount(4) ) .Export(e => e.Enabled(true)) .Series(s => s .Add() .ArgumentField("Country") .ValueField("Medals") .Label(l => l .Visible(true) .Font(f => f.Size(16)) .Connector(c => c .Visible(true) .Width(0.5) ) .Position(PieChartLabelPosition.Columns) .CustomizeText(@<text> function(arg) { return arg.valueText + " (" + arg.percentText + ")"; } </text>) ) ) .DataSource(new[] { new { Country = "USA", Medals = 110 }, new { Country = "China", Medals = 100 }, new { Country = "Russia", Medals = 72 }, new { Country = "Britain", Medals = 47 }, new { Country = "Australia", Medals = 46 }, new { Country = "Germany", Medals = 41 }, new { Country = "France", Medals = 40 }, new { Country = "South Korea", Medals = 31 } }) )
using DevExtreme.AspNet.Data; using DevExtreme.AspNet.Mvc; using DevExtreme.NETCore.Demos.Models; using DevExtreme.NETCore.Demos.Models.SampleData; using Microsoft.AspNetCore.Mvc; using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Linq; namespace DevExtreme.NETCore.Demos.Controllers { public class ChartsController : Controller { public ActionResult PieWithCustomLabels() { return View(); } } }
#pie { height: 440px; }