Hide/Show ajax cloud BalloonPopupExtender
I'm using the BalloonPopupExtender on a text box in order to say : "Unknown input"
because its the only one who allows me to have a panel in which i can insert whatever controls i want.

i want from a button push to show it and from a text change in the textbox to hide it.
i noticed there is no visibility property for BalloonPopupExtender, only the DisplayOnFocus, DisplayOnClick.... properties. but no way to control it from another button of function.

how can i hide/show the BalloonPopupExtender?
Hide/Show ajax cloud BalloonPopupExtender
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I'm using the BalloonPopupExtender on a text box in order to say : "Unknown input"
because its the only one who allows me to have a panel in which i can insert whatever controls i want.

i want from a button push to show it and from a text change in the textbox to hide it.
i noticed there is no visibility property for BalloonPopupExtender, only the DisplayOnFocus, DisplayOnClick.... properties. but no way to control it from another button of function.

how can i hide/show the BalloonPopupExtender?