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Value Indicators API


This demo shows how to use the API of the CircularGauge to change its value and subvalue indicators at runtime. To get and set the values of the indicators, the value and subvalues methods are utilized.

Backend API
<div id="gauge-demo"> <div class="widget-container"> @(Html.DevExtreme().CircularGauge() .ID("gauge") .Scale(s => s .StartValue(10) .EndValue(40) .TickInterval(5) .Label(l => l.CustomizeText(@<text> function (arg) { return arg.valueText + " kV"; } </text>)) ) .Tooltip(t => t.Enabled(true)) .Title(t => t .Text("Generators Voltage (kV)") .Font(f => f.Size(28)) ) .Value(34) .Subvalues(new double[] { 12, 23 }) ) </div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Main generator</span> @(Html.DevExtreme().NumberBox() .ID("main-generator") .Min(10) .Max(40) .Value(34) .Width(100) .InputAttr("aria-label", "Main Generator") .ShowSpinButtons(true) ) </div> <div class="option"> <span>Additional generator 1</span> @(Html.DevExtreme().NumberBox() .ID("additional-generator-one") .Min(10) .Max(40) .Value(12) .Width(100) .InputAttr("aria-label", "Additional Generator One") .ShowSpinButtons(true) ) </div> <div class="option"> <span>Additional generator 2</span> @(Html.DevExtreme().NumberBox() .ID("additional-generator-two") .Min(10) .Max(40) .Value(23) .Width(100) .InputAttr("aria-label", "Additional Generator Two") .ShowSpinButtons(true) ) </div> <div class="option"> @(Html.DevExtreme().Button() .Text("Apply") .Width(100) .OnClick(@<text> function() { var gauge = $("#gauge").dxCircularGauge("instance"); gauge.value($("#main-generator").dxNumberBox("option", "value")); gauge.subvalues([ $("#additional-generator-one").dxNumberBox("option", "value"), $("#additional-generator-two").dxNumberBox("option", "value") ]); } </text>) ) </div> </div> </div>
using DevExtreme.MVC.Demos.Models.SampleData; using System.Collections.Generic; using System.Web.Mvc; namespace DevExtreme.MVC.Demos.Controllers { public class GaugesController : Controller { public ActionResult ValueIndicatorsAPI() { return View(); } } }
.widget-container { margin-right: 320px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); position: absolute; right: 0; top: 0; bottom: 0; width: 260px; } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; display: flex; align-items: center; justify-content: space-between; } .option .dx-button { margin-left: auto; }