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2 Posts
c# chart.js webform help
Jul 15, 2019 05:40 PM|infotba|LINK
Hi
my default.aspx.cs code :
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="default.aspx.cs" Inherits="ChartDene._default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="https://cdnjs.com/libraries/Chart.js"></script>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
</head>
<body>
<form id="form1" runat="server">
<canvas id="myChart" width="400" height="400"></canvas>
</form>
</body>
</html>
and
defaul.aspx is
protected void Page_Load(object sender, EventArgs e)
{
string chart = "";
chart += "<script>";
chart += "var ctx = document.getElementById('myChart').getContext('2d');";
chart += "var myChart = new Chart(ctx, {";
chart += " type: 'bar',";
chart += " data:";
chart += " {";
chart += " labels: ['Red', 'Blue'],";
chart += " datasets: [{";
chart += " data: [110, 2000]";
chart += " }]";
chart += " },";
chart += " });";
chart += "</script>";
}
Chart is not displaying
please help me,
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44401 Points
19191 Posts
Re: c# chart.js webform help
Jul 15, 2019 05:44 PM|mgebhard|LINK
See the following.
https://forums.asp.net/p/2129509/6169081.aspx
Contributor
2180 Points
872 Posts
Re: c# chart.js webform help
Jul 16, 2019 03:26 AM|samwu|LINK
Hi infotba,
When you put the script into code behind, you should use RegisterStartupScript method to Registers the startup script with the Page object.
More information about RegisterStartupScript you can reference this link: https://forums.asp.net/t/2157780.aspx
Note: The code I tested is my own chart.js
The code:
The result:
Best regards,
Sam
Please remember to click "Mark as Answer" the responses that resolved your issue.
If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.
Participant
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733 Posts
Re: c# chart.js webform help
Jul 16, 2019 05:45 AM|yogyogi|LINK
You are just starting with Chart.js. This is covered really well in this thread:
help : populate chart
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