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Assign StripLines via Ajax instead of Hard Code

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  • #38371

    Hello. I am developing a .Net Core Razor Page app using Canvasjs. I am assigning the Data Points to the chart using an AJAX call which returns Json data and this is then pushed into the chart.

    However, I also need to assign Strip Lines using a similar method. I’ve uploaded a sample project to Google Docs which can be downloaded from https://drive.google.com/file/d/1QBLHZl1nRHXOD9MkhXo-Acbgxcz9zTXH/view?usp=sharing

    In the sample, you’ll see that I am hard coding 2 Strip Lines to the X-Axis of the chart, but I need the Strip Lines assigned in the same way as the Data Points, i.e. via an AJAX call and then returning Json data for the Strip Lines into the chart.

    I can’t use a hard-coded approach.

    Is this possible?

    Any help much appreciated.




    You can perform AJAX request to fetch stripline values & render chart. Please check the code-snippet below.

    /* Index.cshtml.cs */
    public JsonResult OnGetStriplineData()
    	List<StripLine> stripLines = new List<StripLine>();
    	DateTime currentTime = DateTime.Now;
    	DateTime sTime = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
    	stripLines.Add(new StripLine((long)(currentTime - sTime).TotalMilliseconds, "Label 1"));
    	JsonSerializerSettings _jsonSetting = new JsonSerializerSettings() { NullValueHandling = NullValueHandling.Ignore };
    	return new JsonResult(JsonConvert.SerializeObject(stripLines, _jsonSetting));
    /* Index.cshtml */
    	type: "GET",
    	url: "/?handler=StriplineData",
    	contentType: "application/json",
    	dataType: "json",
    	success: function (response) {
    		chart.options.axisX.stripLines = JSON.parse(response);
    	failure: function (response) {

    Please take a look at this updated sample project for complete code.

    ASP.NET Chart with Stripline from AJAX

    Vishwas R
    Team CanvasJS

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