What is trackball and how to use trackball in ASP.NET Web Forms Chart?
Trackball is an interactive feature in the Chart that is used to display details about a point in the Chart close to the current mouse location. Trackball displays a vertical line, marker, symbols like circle, star, etc., and tooltip at the point closest to the current mouse location for each series.
Trackball is available for only one point in each series when more than one series are present in the series collection.
Trackball is enabled by setting the visible property of the crosshair to true and the type property of the crosshair to trackball. It provides options to customize the trackball line and marker. Trackball displays crosshair labels in the axis when the visible property of the crosshairLabel is set to true in the horizontal axis.
The following code snippet illustrates this
ASP
<ej:Chart ID="container" runat="server"> <Crosshair Type="Trackball" Visible="true"> <Line Color="transparent"> . . . . . . . </Crosshair> . . . . . . . </ej:Chart>
The following screenshot displays the Chart with trackball. Trackball line is not visible in the screenshot because of setting transparent color to the trackball line.
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!
