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LiveUpdate.cshtml
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@using Syncfusion.EJ2.Charts;
@section ControlsSection {
@{
var container1Border = new SparklineSparklineBorder { Color = "#0877d6", Width = 2 };
var container2Border = new SparklineSparklineBorder { Color = "#5bcc8f", Width = 2 };
var container3Border = new SparklineSparklineBorder { Color = "#b247c6", Width = 2 };
var container4Border = new SparklineSparklineBorder { Color = "#d1a990", Width = 2 };
var spark1Border = new SparklineSparklineBorder { Color = "#0358a0", Width = 1 };
var spark2Border = new SparklineSparklineBorder { Color = "#27ad66", Width = 1 };
var spark3Border = new SparklineSparklineBorder { Color = "#f5e8fc", Width = 1 };
var spark4Border = new SparklineSparklineBorder { Color = "#AA907A", Width = 1 };
}
<div class="control-section" align="center">
<div id="spark-container" class="row">
<div class="cols-sample-area" align="center" style="margin-top: 8%;">
<div align="center" class="col-lg-3 col-m-3 col-sm-6">
<div align="center" class="spark" id="spark-container1">
<div style="color: #000000; font-size: 12px; position: absolute; margin-top: 10px; margin-left: 8%;">
<b>CPU</b>
</div>
<div id='cpu' style="color: #0877d6;position: absolute; margin-top: 25px; margin-left: 8%;">
26% 1.2GHz
</div>
<ejs-sparkline axisSettings="@new SparklineAxisSettings { MinY = 0 , MaxY = 150 }" id="spark-container1" lineWidth="1" load="sparkLoad" border="spark1Border" height="130px" width="90%" fill="#e8f2fc" type="@SparklineType.Area"
valueType="@Syncfusion.EJ2.Charts.SparklineValueType.Numeric" xName="x" yName="yval">
<e-sparkline-containerarea background="white" border="container1Border"></e-sparkline-containerarea>
</ejs-sparkline>
</div>
</div>
<div align="center" class="col-lg-3 col-m-3 col-sm-6">
<div align="center" class="spark" id="spark-container2">
<div style="color: #000000; font-size: 12px; position: absolute; margin-top: 10px; margin-left: 8%;">
<b>Disk</b>
</div>
<div id="disk" style="color: #b247c6;position: absolute; margin-top: 25px; margin-left: 8%;">
50%
</div>
<ejs-sparkline axisSettings="@new SparklineAxisSettings { MinY =4, MaxY = 8 }" id="spark-container2" lineWidth="1" load="sparkLoad" border="spark3Border" height="130px" width="90%" fill="#f5e8fc" type="@SparklineType.Area"
valueType="@Syncfusion.EJ2.Charts.SparklineValueType.Numeric" xName="x" yName="yval">
<e-sparkline-containerarea background="white" border="container3Border"></e-sparkline-containerarea>
</ejs-sparkline>
</div>
</div>
<div align="center" class="col-lg-3 col-m-3 col-sm-6">
<div align="center" class="spark" id="spark-container3">
<div style="color: #000000; font-size: 12px; position: absolute; margin-top: 10px; margin-left: 8%;">
<b>Memory</b>
</div>
<div id="memory" style="color: #5bcc8f;position: absolute; margin-top: 25px; margin-left: 8%;">
6.5/15.8 GB (41%)
</div>
<ejs-sparkline axisSettings="@new SparklineAxisSettings{ MinY =0 ,MaxY = 100 }" id="spark-container3" lineWidth="1" load="sparkLoad" border="spark2Border" height="130px" width="90%" fill="#e0f9d1" type="@SparklineType.Area"
valueType="@Syncfusion.EJ2.Charts.SparklineValueType.Numeric" xName="x" yName="yval">
<e-sparkline-containerarea background="white" border="container2Border"></e-sparkline-containerarea>
</ejs-sparkline>
</div>
</div>
<div align="center" class="col-lg-3 col-m-3 col-sm-6">
<div align="center" class="spark" id="spark-container4">
<div style="color: #000000; font-size: 12px; position: absolute; margin-top: 10px; margin-left: 8%;">
<b>Ethernet</b>
</div>
<div id="net" style="color: #d1a990;position: absolute; margin-top: 25px; margin-left: 8%;">
R: 50Kbps
</div>
</div>
<ejs-sparkline axisSettings="@new SparklineAxisSettings { MinY = 0 , MaxY = 100 }" id="spark-container4" lineWidth="1" load="sparkLoad" border="spark4Border" height="130px" width="90%" fill="#F2D8C7" type="@SparklineType.Area"
valueType="@Syncfusion.EJ2.Charts.SparklineValueType.Numeric" xName="x" yName="yval">
<e-sparkline-containerarea background="white" border="container4Border"></e-sparkline-containerarea>
</ejs-sparkline>
</div>
</div>
</div>
</div>
<style>
td {
padding: 10px;
}
</style>
<script type="text/javascript">
var spark1, spark2, spark3, spark4;
var time1, time2, time3, time4;
var temp1, temp2, temp3, temp4;
function update1() {
if (document.getElementById(spark1.element.id + "_svg")) {
var value = ((Math.random() * 100) + 5) % 50;
spark1.dataSource.push({ x:spark1.dataSource[spark1.dataSource.length-1].x + 1, yval: value });
spark1.dataSource.shift();
spark1.refresh();
var cpu = document.getElementById('cpu');
cpu.innerHTML = ((value / 150) * 100).toFixed(0) + '% ' + ((value * 3) / 100).toFixed(2) + 'GHz';
}
}
function update2() {
if (document.getElementById(spark2.element.id + "_svg")) {
var value = Math.random();
if (value > 0.6) {
value = 6 + (value / 10);
} else {
value = 6 - (value / 10);
}
spark2.dataSource.push({ x: spark2.dataSource[spark2.dataSource.length-1].x + 1, yval: value });
spark2.dataSource.shift();
spark2.refresh();
memory = document.getElementById('memory');
var gb = parseFloat(value.toString().replace('0', '')).toFixed(1);
memory.innerHTML = gb + '/15.8 GB (' + ((value / 15.8) * 100).toFixed(0) + '%)';
}
}
function update3() {
if (document.getElementById(spark3.element.id + "_svg")) {
var value = ((Math.random() * 100) + 5) % 80;
spark3.dataSource.push({ x: spark3.dataSource[spark3.dataSource.length-1].x + 1, yval: value });
spark3.dataSource.shift();
spark3.refresh();
var disk = document.getElementById('disk');
disk.innerHTML = value.toFixed(0) + '%';
}
}
function update4() {
if (document.getElementById(spark4.element.id + "_svg")) {
let value = ((Math.random() * 100) + 5) % 80;
spark4.dataSource.push({ x: spark4.dataSource[spark4.dataSource.length-1].x + 1, yval: value });
spark4.dataSource.shift();
spark4.refresh();
var net = document.getElementById('net');
net.innerHTML = 'R: ' + value.toFixed(0) + 'Kbps';
}
}
function sparkLoad(args) {
if (!args.sparkline.refreshing) {
if (args.sparkline.element.id === "spark-container1") {
spark1 = args.sparkline;
time1 = setInterval(update1, 1000);
args.sparkline.dataSource = [
{ x: 0, yval: 50 },
{ x: 1, yval: 30 },
{ x: 2, yval: 20 },
{ x: 3, yval: 30 },
{ x: 4, yval: 50 },
{ x: 5, yval: 40 },
{ x: 6, yval: 20 },
{ x: 7, yval: 10 },
{ x: 8, yval: 30 },
{ x: 9, yval: 10 },
{ x: 10, yval: 40 },
{ x: 11, yval: 50 },
{ x: 12, yval: 10 },
{ x: 13, yval: 30 },
{ x: 14, yval: 50 },
{ x: 15, yval: 20 },
{ x: 16, yval: 10 },
{ x: 17, yval: 40 },
{ x: 18, yval: 30 },
{ x: 19, yval: 40 }
];
} else if (args.sparkline.element.id === "spark-container2") {
spark2 = args.sparkline;
time2 = setInterval(update2, 1000);
args.sparkline.dataSource = [
{ x: 0, yval: 6.05 },
{ x: 1, yval: 6.03 },
{ x: 2, yval: 6.02 },
{ x: 3, yval: 6.07 },
{ x: 4, yval: 6.05 },
{ x: 5, yval: 6.09 },
{ x: 6, yval: 6.08 },
{ x: 7, yval: 6.01 },
{ x: 8, yval: 6.03 },
{ x: 9, yval: 6.01 },
{ x: 10, yval: 6.07 },
{ x: 11, yval: 6.05 },
{ x: 12, yval: 6.01 },
{ x: 13, yval: 6.06 },
{ x: 14, yval: 6.05 },
{ x: 15, yval: 6.03 },
{ x: 16, yval: 6.01 },
{ x: 17, yval: 6.09 },
{ x: 18, yval: 6.06 },
{ x: 19, yval: 6.05 }
];
} else if (args.sparkline.element.id === "spark-container3") {
spark3 = args.sparkline;
time3 = setInterval(update3, 1000);
args.sparkline.dataSource = [
{ x: 0, yval: 50 },
{ x: 1, yval: 30 },
{ x: 2, yval: 20 },
{ x: 3, yval: 70 },
{ x: 4, yval: 50 },
{ x: 5, yval: 20 },
{ x: 6, yval: 80 },
{ x: 7, yval: 10 },
{ x: 8, yval: 30 },
{ x: 9, yval: 10 },
{ x: 10, yval: 70 },
{ x: 11, yval: 50 },
{ x: 12, yval: 10 },
{ x: 13, yval: 60 },
{ x: 14, yval: 50 },
{ x: 15, yval: 30 },
{ x: 16, yval: 10 },
{ x: 17, yval: 20 },
{ x: 18, yval: 60 },
{ x: 19, yval: 50 }
];
} else {
spark4 = args.sparkline;
time4 = setInterval(update4, 1000);
args.sparkline.dataSource = [
{ x: 0, yval: 50 },
{ x: 1, yval: 30 },
{ x: 2, yval: 20 },
{ x: 3, yval: 70 },
{ x: 4, yval: 50 },
{ x: 5, yval: 20 },
{ x: 6, yval: 80 },
{ x: 7, yval: 10 },
{ x: 8, yval: 30 },
{ x: 9, yval: 10 },
{ x: 10, yval: 70 },
{ x: 11, yval: 50 },
{ x: 12, yval: 10 },
{ x: 13, yval: 60 },
{ x: 14, yval: 50 },
{ x: 15, yval: 30 },
{ x: 16, yval: 10 },
{ x: 17, yval: 20 },
{ x: 18, yval: 60 },
{ x: 19, yval: 50 }
];
}
}
}
</script>
}
@section Meta{
<meta name="description" content="This demo for Essential JS2 Sparkline control depicts the task manager with live data update for sparklines." />
}
@section ActionDescription{
<div id="action-description">
<p>
This sample visualizes the CPU, memory, disk and Ethernet usage by dynamically updating the values in Sparkline.
</p>
</div>
}
@section Description{
<div id="description">
<p>
In this example, you can see how to dynamically update the values of sparkline. We have rendered 4 sparklines and updating their value for every second.
</p>
</div>
}