How to customize the tooltip text dynamically in ASP.NET Web Forms?
Essential Chart dynamically supports customizing tooltip text by using OnClientToolTipInitialize event. Refer to Chart Events for more information about the events available in 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.
ASP
<ej:Chart ID="container" OnClientToolTipInitialize="tooltip" runat="server">
<CommonSeriesOptions DashArray="5,5" type="Line">
<Marker Visible="true"></Marker>
<Tooltip Visible="true"></Tooltip>
</CommonSeriesOptions>
</ej:Chart>
<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.
Figure 1: Chart with customized Tooltip
Note:
A new version of Essential Studio for ASP.NET is available. Versions prior to the release of Essential Studio 2014, Volume 2 will now be referred to as a classic versions.The new ASP.NET suite is powered by Essential Studio for JavaScript providing client-side rendering of HTML 5-JavaScript controls, offering better performance, and better support for touch interactivity. The new version includes all the features of the old version, so migration is easy.
The Classic controls can be used in existing projects; however, if you are starting a new project, we recommend using the latest version of Essential Studio for ASP.NET. Although Syncfusion will continue to support all Classic Versions, we are happy to assist you in migrating to the newest edition.
For current customers, you can check out our 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 other controls. If you have any queries or require clarifications, please let us know in the comments section below.
You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!
