modalpopupextender and commas appearing in my textbox asp.net

Question

Some weird stuff is happening, I am converting an application that used to use javascript to open another web page in a tiny window for data input to use a ModalPopupExtende

Answer 1

I had the same problem except I am not using the AjaxControlToolkit or update panels. My problem was solved by moving the

tag from the ASP.net master page to the page where the textboxes are. May help someone.