hello i am new in asp.net and working on my first project and facing problem on modalpopupextender.
My thread-
When ever i set the properties of modalpopupextender it goes invisible from my design page.
when i debug the project and click on link button it shows nothing .
I need modalpopup extender for login but it is not working . I am using it on my Master Page.
Please help me
Thanks in advance....