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Tooltip

Smithchart will display details about the points through tooltip, when the mouse is moved over the point. By default, tooltip is disabled. To enable the tooltip for smithchart, you need to import and inject TooltipRender module from chart. And also set the property visible as true, in tooltip settings. You can customize the tooltip’s visibility and appearance differently each series in the smithchart.

tagHelper
tooltip.cs
@using Syncfusion.EJ2;
@using Syncfusion.EJ2.Charts;
<div id="control-section">
 <ejs-smithchart id="smithchart" loaded="loaded">
        <e-smithchart-smithchartseriescollection>
            <e-smithchart-smithchartseries name="Transmission1">
            <e-smithchartseries-tooltip visible="true"></e-smithchartseries-tooltip>
            </e-smithchart-smithchartseries>
            <e-smithchart-smithchartseries name="Transmission2">
            <e-smithchartseries-tooltip visible="true"></e-smithchartseries-tooltip>
             <e-smithchartseries-marker visible="true"></e-smithchartseries-marker>
            </e-smithchart-smithchartseries>
        </e-smithchart-smithchartseriescollection>
</ejs-smithchart>
</div>
<script>
        function loaded(args) {
            window.smithchart = args.smithchart;
            args.smithchart.series[0].points = [
                { resistance: 10, reactance: 25 }, { resistance: 8, reactance: 6 },
                { resistance: 6, reactance: 4.5 }, { resistance: 4.5, reactance: 2 },
                { resistance: 3.5, reactance: 1.6 }, { resistance: 2.5, reactance: 1.3 },
                { resistance: 2, reactance: 1.2 }, { resistance: 1.5, reactance: 1 },
                { resistance: 1, reactance: 0.8 }, { resistance: 0.5, reactance: 0.4 },
                { resistance: 0.3, reactance: 0.2 }, { resistance: 0, reactance: 0.15 },
            ];
            args.smithchart.series[1].points = [{ resistance: 20, reactance: -50 }, { resistance: 10, reactance: -10 },
                { resistance: 9, reactance: -4.5 }, { resistance: 8, reactance: -3.5 },
                { resistance: 7, reactance: -2.5 }, { resistance: 6, reactance: -1.5 },
                { resistance: 5, reactance: -1 }, { resistance: 4.5, reactance: -0.5 },
                { resistance: 3.5, reactance: 0 }, { resistance: 2.5, reactance: 0.4 },
                { resistance: 2, reactance: 0.5 }, { resistance: 1.5, reactance: 0.5 },
                { resistance: 1, reactance: 0.4 }, { resistance: 0.5, reactance: 0.2 },
                { resistance: 0.3, reactance: 0.1 }, { resistance: 0, reactance: 0.05 },];
            args.smithchart.loaded = null;
            args.smithchart.refresh();
        }
    </script>
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using EJ2_Core_Application.Models;
using Newtonsoft.Json;

namespace EJ2_Core_Application.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            return View();
        }
    }
}