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There are two ways to assign tooltips to RadClock, namely setting the ToolTipText property of the RadClockElement, or as in most of the RadControls by using the ToolTipTextNeeded event of RadClock. It is necessary the ShowItemToolTips property to be set to true which is the default value.

Setting the ToolTipText property

radClock1.ClockElement.ToolTipText = DateTime.Now.ToLongTimeString();

radClock1.ClockElement.ToolTipText = DateTime.Now.ToLongTimeString()

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Setting tool tips in the ToolTipTextNeeded event

private void RadClock1_ToolTipTextNeeded(object sender, Telerik.WinControls.ToolTipTextNeededEventArgs e)
    e.ToolTipText = DateTime.Now.ToLongTimeString();

Private Sub RadClock1_ToolTipTextNeeded(sender As Object, e As Telerik.WinControls.ToolTipTextNeededEventArgs)
    e.ToolTipText = DateTime.Now.ToLongTimeString()
End Sub

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The ToolTipTextNeeded event has higher priority and overrides the tool tips set in the ToolTipText property.

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