Display Axis Labels Tooltip
The Chart does not provide a built-in Tooltip for the Axis labels. To display a custom tooltip when hovering the Chart axis labels, bind to the
mouseleave events of the Chart's surface element, and toggle a Popup with dynamic content based on the hovered label.
The popup could display a shortened version of the text or a different text entirely. The content is transferred to the axis label visual, a low-level drawing element, and displayed when its hovered.
The following example demonstrates the described approach: