as a bit of background I am new to Sharepoint development, as well as web programming in general. I've done asp.net programming in the past, but not much javascrip/ajax/jquery. From the (tons...) of research I've done on this so far, it looks like I'll need to do something like an AJAX post with my data encoded into JSON. I just can't figure out how to link up the POST to my modal popup so I can receive the data, deserialize it, and use the data.
My requirement is relatively simple: I need to grab data from a gridview and populate the listview in my popup with those values. The reason I don't want to use the ? parameters in the url is because our users can select hundreds of values if they want to, and I don't want there to be an exception because the url is too long (correct me if I'm wrong).
Here's my attempt, right now I'm just throwing dummy strings at the ajax post so I can keep it as simple as possible.
Here's a function to basically send and ajax post to itself, just to test functionality. I can't grab this data though, or see the alert, so something is messed up here.
Here's the code I was trying to use to grab the posted data (on button click) but it doesn't seem to do anything. I originally had this in my page_load, but then the modal wouldn't even show up. I'm not exactly sure on the control flow of ajax POSTing, so I could see why a button click would not be able to grab the data, I'm just not sure what else to do.
So I can open my dialogue, press buttons on the dialog, etc, but the button doesn't grab the data I'm trying to send. And Ideally, it would be sent when the window first pops up instead of on button click.
Thanks in advance for the help, I know this is a lot of code for a simple question, I just don't know where I'm going wrong.