ASP.NET MVC Charts & Graphs with Large number of Data Points

Download ASP.NET Chart Samples

CanvasJS Charts render or update huge data-sets in a matter of milliseconds without any performance lag. API is simple and easy to use. The given example includes source code that you can try running locally.

@{
	Layout = null;
}

<!DOCTYPE HTML>
<html>
<head>
<script>
window.onload = function () {

	var chart = new CanvasJS.Chart("chartContainer", {
		zoomEnabled: true,
		animationEnabled: true,
		title: {
			text: "Try Zooming - Panning"
		},
		data: [{
			type: "line",
			dataPoints: @Html.Raw(ViewBag.DataPoints)  // random data
		}]
	});

	var startTime = new Date();
	chart.render();
	var endTime = new Date();
	document.getElementById("timeToRender").innerHTML = "Time to Render: " + (endTime - startTime) + "ms";

}
</script>
<style>
	#timeToRender {
		position: absolute;
		top: 10px;
		font-size: 20px;
		font-weight: bold;
		background-color: #d85757;
		padding: 0px 4px;
		color: #ffffff;
	}
</style>
</head>
<body>
<div id="chartContainer" style="height: 370px; width: 100%;"></div>
<span id="timeToRender"></span>
<script src="https://cdn.canvasjs.com/canvasjs.min.js"></script>
</body>
</html>                              
using ASPNET_MVC_ChartsDemo.Models;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Web.Mvc;

namespace ASPNET_MVC_ChartsDemo.Controllers
{
	public class HomeController : Controller
	{
		// GET: Home
		public ActionResult Index()
		{
			double count = 50000, y = 100;
			Random random = new Random();
			List<DataPoint> dataPoints = new List<DataPoint>();

			for (int i = 0; i < count; i++)
			{
				y += random.Next(-5, 6);
				dataPoints.Add(new DataPoint(i, y));
			}

			ViewBag.DataPoints = JsonConvert.SerializeObject(dataPoints);

			return View();
		}
	}
}                        
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Web;

namespace ASPNET_MVC_ChartsDemo.Models
{
	//DataContract for Serializing Data - required to serve in JSON format
	[DataContract]
	public class DataPoint
	{
		public DataPoint(double x, double y)
		{
			this.X = x;
			this.Y = y;
		}

		//Explicitly setting the name to be used while serializing to JSON.
		[DataMember(Name = "x")]
		public Nullable<double> X = null;

		//Explicitly setting the name to be used while serializing to JSON.
		[DataMember(Name = "y")]
		public Nullable<double> Y = null;
	}
}

Chart Customizations

Marker size can be customized using markerSize property. Setting markerSize to zero in charts with large number of data-point enhances the performance. Other commonly used customization options include lineColor, lineDashType, etc.

Note   For step by step instructions, follow our ASP.NET MVC Integration Tutorial