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How to customize the tooltip text dynamically in ASP.NET MVC Chart?

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Essential Chart dynamically supports customizing tooltip text by using ToolTipInitialize event. Refer to Chart Events for more information about the events available in ASP.NET MVC Chart and also refer to ToolTipInitialize event for more information about the parameters available in the event handler.

This event is triggered before displaying the tooltip and provides a parameter containing properties cancel, data, model and type to the event handler. You can customize tooltip text with currentText property available in the data property of the event handler argument.

CSHTML

@(Html.EJ().Chart("container")
    .ToolTipInitialize("tooltip")
    .CommonSeriesOptions(options=>
        options.Type(SeriesType.Line)
            .DashArray("5,5")
            .Marker(marker=>marker.Visible(true))
            .Tooltip(tooltip=>
                tooltip.Visible(true))) 
)
<script type="text/javascript">
    function tooltip(sender) {
        sender.data.currentText = "Customized tooltip";
        sender.cancel = true;
    }    
</script>

The following screenshot displays the Chart with customized tooltip.

Customized the tooltip text dynamically in ASP.NET MVC Chart

Figure 1: Chart with customized Tooltip

Conclusion

I hope you enjoyed learning about how to customize the tooltip text dynamically.

You can refer to our ASP.NET MVC Chart’s feature tour page to know about its other groundbreaking feature representations. You can also explore our  ASP.NET MVC Chart Documentation to understand how to present and manipulate data.

For current customers, you can check out our ASP.NET MVC components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial to check out our ASP.NET MVC Chart and other ASP.NET MVC components.

If you have any queries or require clarifications, please let us know in comments below. You can also contact us through our support forumsDirect-Trac or feedback portal. We are always happy to assist you!

 

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