ToolTips
The Tooltip represents a small rectangular window that displays a brief description when the user hovers over control or an element. All controls have the ToolTipTextNeeded event which can be used for dynamically setting the text of the tooltips.
Figure 1: Tooltip on a grid cells.
Using the ToolTipTextNeeded event.
The following example shows how you can use the ToolTipTextNeeded event to show a tooltip on a RadListView item. In addition the ToolTipTextNeededEventArgs object gives you access to the tooltip instance.
Setting the tooltip text in the ToolTipTextNeeded event handler.
private void RadListControl1_ToolTipTextNeeded(object sender, Telerik.WinControls.ToolTipTextNeededEventArgs e)
{
var item = sender as RadListVisualItem;
if (item != null)
{
var dataItem = item.Data as RadListDataItem;
e.ToolTipText = dataItem.Value.ToString();
}
}
Private Sub RadListControl1_ToolTipTextNeeded(ByVal sender As Object, ByVal e As Telerik.WinControls.ToolTipTextNeededEventArgs)
Dim item = TryCast(sender, RadListVisualItem)
If item IsNot Nothing Then
Dim dataItem = TryCast(item.Data, RadListDataItem)
e.ToolTipText = dataItem.Value.ToString()
End If
End Sub
Figure 2: The result from the above code.
