I have a simple dropdown list on an asp.net page. The data that populates the dropdown is slow to load and there isn't much I can do about it.
Instead of waiting for the data to populate and then display the page once fully loaded, I would like to display the page and maybe have a Loading... show up on the dropdown list while it loads.
What is the correct way of achieving that?
Preform an ajax request to your controller to a specific action result that just returns the data you need to populate the dropdown. Example:
$(function() {
$.ajax({
url: 'controller/action/',
data: {
arg1: 1,
arg2: 2
},
success: function (data) {
//handle the data
}
});
});
`
public ActionResult SendDropdown(int arg1, int arg2) {
//code to get the dropdown data
return Json(new { dropdowndata }, JsonRequestBehaviour.AllowGet);
}
`
async/awaitwon't make that go faster, they'll release the thread while waiting for the data to load. Just don't load data that you won't display. Use paging and/or load the data from JavaScript in pages - Panagiotis Kanavos