The user control is, at this point a part of the page and can access it just like any other user control. For example, the this.Page
property holds a reference to the parent page. You can then use the FindControl()
method to get a specific control, or
you can have a public property in the page's class
that can be accessed by the user control (after casting the Page to the appropriate type) so it can affect its parent page. This is not influenced or related to the RadToolTipManager.
All the best,
the Telerik team
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