Asp.net MVC 和 Chart js [英] Asp.net MVC and Chart js
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问题描述
I want to show data that comes from databse with chart.js.
In asp.net MVC i have a controller that retrieves data from the database and shows them in view with the following code:
@foreach(var items in Model)
{
<h6>@items.title</h6>
<h6>@items.cuntr</h6>
}
How can I show @items.title and @items.cuntr in chart.js? Thanks a lot.
解决方案
Take a look at this link: http://www.c-sharpcorner.com/article/create-free-charts-using-chart-js-in-asp-net-mvc/ It describes all the relevant steps to work with charts in mvc.
Let us say that this is your controller method:
public ActionResult Index()
{
ViewBag.Data = "Value,Value1,Value2,Value3"; //list of strings that you need to show on the chart. as mentioned in the example from c-sharpcorner
ViewBag.ObjectName = "Test,Test1,Test2,Test3";
}
You can return the data in a view bag and pass them to the data property oif the chart:
And this is your view:
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Charts</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.2.2/Chart.bundle.min.js"></script>
<script>
var barChartData =
{
labels: [@Html.Raw(ViewBag.ObjectName)], //the names displayed on the x-axis, see images below
datasets: [{
label: 'ProductWise Sales Count',
backgroundColor: [
"#f990a7",
"#aad2ed",
"#9966FF",
"#99e5e5",
"#f7bd83",
],
borderWidth: 2,
data: [@ViewBag.Data] //what you returned back from controller. values displayed on the y-axis, see images below
}]
};
window.onload = function () {
var ctx1 = document.getElementById("barcanvas").getContext("2d");
window.myBar = new Chart(ctx1,
{
type: 'bar',
data: barChartData,
options:
{
title:
{
display: true,
text: "ProductWise Sales Count"
},
responsive: true,
maintainAspectRatio: true
}
});
}
</script>
</head>
<body>
<div style="text-align: center">
<canvas id="barcanvas"></canvas>
</div>
<div style="text-align: center">
Disclaimer:- This data is for demo it is
not real data it wont relate to any company
</div>
</body>
</html>
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