I'm calling a JS fcn that fires AJAX to a webmethod and returns a boolean. How do I retrieve the return value in the codebehind? (VB) I can set a hiddenfield value in the JS, but if it's async how can my VB know when it's changed?
How a web page can communicate with a web server while a user type characters in an input field.
how to remove or delete multiple selected items from listbox in on button click in asp?