For some reason I didn't load the ScriptManager dynamically.
So, make sure you include a ScriptManager on the page before using the
usercontrol or you will come across this error message: "The control with
ID 'HoverMenuExtender1' requires a ScriptManager on the page. The ScriptManager
must appear before any controls that need it."
" Invalid postback or callback argument. Event
validation is enabled using…".
Initially, I was trying to modify the value of the
dropdownlist through the JavaScript and I kept getting the error whenever I hit
the submit button. The easiest solution was to set the EnableEventValidation =
false on the page directive, but instead, I found another work around by using
hidden field.
The tooltip (title) were displaying correctly on IE 7.0,
8.0, FireFox and Google Chrome but not in IE6.0. In order to remedy the
problem, I included a separate function to show and hide the tooltip.
I am using a checkboxlist controls and having difficulty to
get the checkboxlist value and text using JavaScript. After conducting some
research, I came across a class library by Trilochan Nayak. I have modified his
class so that I can retrieve the value and text of the selected checkbox
through the JavaScript.
