Hello RICHARD FRIEND,
As far as I understand you are using a RadToolTipManager with OnAjaxUpdate event and you want to update the grid from a button inside the tooltip. Of so, please note that in this case the tooltip contains another update panel which is used to make the ajax request to load the content. Since the update panel works as updating only the part of the page it wraps it is expected that the grid will not be updated.
In order to get the desired result you can simply consider the tooltip as another update panel. The easiest solution is to wrap the grid in an update panel with UpdateMode="Conditional"
and when the button in the tooltip is clicked and modifications to the grid are made to call its method Update()
. Note, that this is general MS AJAX knowledge and how the things work and it is not directly related to RadControls.
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