Textboxes are not filled

I am creating a content web page which is inherited from BasePage. There is a drop down on the page. On selectedindexchanged of dropdown, I'm filling some values in text boxes on the page. No error is coming. Even when debugging by applying breakpoint on selectedin开发者_如何学JAVAdexchanged, everything seems fine. But textboxes are empty after page load.

If you could tap into the PreRender event, put a breakpoint there, and use the immediate window to evaluate the textbox's text value, to see if they still exist? Also check what else might be setting textbox Text property.

Lastly, if you are using an update panel, ensure the textboxes are also in that updatepanel region.