how to use same AjaxModal popup Extender for multiple buttons

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.NET4

Hi friends,

I have 5 buttons and clicking each ,ajax modal popup is shown where i given the option to upload the files.

All the 5 button need similar popup only so i thought to reuse the same panel and on button click i opened the popup.Here am facing the issue.

while clicking to 2 button, i change the panel title and make popup to show.

then clicking the 1 button which is the default target control ID of the popup, am getting the panel2 changes only.i have written button1 click event to change the code.But it is not triggered.

Please guide how to reuse the popup extender?



Thanks