Populate ASP.NET textbox from combobox selected index change

I am very new to ASP.NET.I have a an ASP.NET page with an AJAX Combobox and a TextBox. The combobox populates from a database and has value of ID and displays Name. The textbox should display Address....

Dealing with expired authentication for a partially filled f

I have a large webform, and would like to prompt the user to login if their session expires, or have them login when they submit the form. It seems that having them login when they submit the form creates...