Generally speaking, you can enable tooltips over the Timeline Period controls like this:
However, due to the fact that the TimelineItemContainer
is placed over the TimelinePeriodContainer
in the RadTimeline control template, mouse events do not reach the TimelinePeriodContainer
and its items (the individual TimelinePeriodControls
) and that's why no tooltip will be displayed. The easiest way to change this is to set the Canvas.ZIndex property of the Grid that holds the TimelinePeriodContainer from 100 to 300. (see timeline-template.png).
Please note that by doing this you will effectively disable the control's selection functionality. If you want to have both tooltips and selection you will need to make more extensive changes in the control template.
I have attached a sample project that demonstrates the workaround with ZIndex (along with a screenshot - timeline-tooltip.png), which you can further customize if you want to make the selection functionality available.
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