Range Selector - Numeric Scale

In this demo, data used to define the RangeSelector scale comes in the string type. However, there is the valueType property that specifies the actual data type of the scale. As this property is set to «numeric», the string data will be cast to the numeric type.

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Backend API

@model IEnumerable<DevExtreme.NETCore.Demos.Models.NumericScaleProduct> @(Html.DevExtreme().RangeSelector() .ID("range-selector") .DataSource(Model) .Margin(m => m.Top(50)) .Chart(c => c .CommonSeriesSettings(cs => cs .Type(SeriesType.Spline) .ArgumentField("Weight") ) .Series(s => { s.Add().ValueField("AppleCost").Color("#00ff00"); s.Add().ValueField("OrangeCost").Color("#ffa500"); }) ) .Scale(s => s.ValueType(ChartDataType.Numeric)) .Value(new[] { 1.0, 2.0 }) .Title("Select a Product Weight") )

using DevExtreme.NETCore.Demos.Models.SampleData; using Microsoft.AspNetCore.Mvc; using System.Linq; namespace DevExtreme.NETCore.Demos.Controllers { public class RangeSelectorController : Controller { public ActionResult NumericScale() { return View(SampleData.NumericScaleProducts); } } }

using System; using System.Collections.Generic; using System.Linq; namespace DevExtreme.NETCore.Demos.Models { public class NumericScaleProduct { public double Weight { get; set; } public double AppleCost { get; set; } public double OrangeCost { get; set; } } }

using System; using System.Collections.Generic; using System.Linq; namespace DevExtreme.NETCore.Demos.Models.SampleData { public partial class SampleData { public static readonly IEnumerable<NumericScaleProduct> NumericScaleProducts = new[] { new NumericScaleProduct { Weight = 1, AppleCost = 3, OrangeCost = 7 }, new NumericScaleProduct { Weight = 2, AppleCost = 20, OrangeCost = 14 }, new NumericScaleProduct { Weight = 3, AppleCost = 21, OrangeCost = 21 }, new NumericScaleProduct { Weight = 4, AppleCost = 22, OrangeCost = 28 }, new NumericScaleProduct { Weight = 5, AppleCost = 25, OrangeCost = 35 }, new NumericScaleProduct { Weight = 6, AppleCost = 30, OrangeCost = 42 }, new NumericScaleProduct { Weight = 7, AppleCost = 35, OrangeCost = 44 }, new NumericScaleProduct { Weight = 8, AppleCost = 42, OrangeCost = 45 }, new NumericScaleProduct { Weight = 9, AppleCost = 49, OrangeCost = 46 }, new NumericScaleProduct { Weight = 10, AppleCost = 60, OrangeCost = 47 } }; } }

#range-selector { height: 400px; }