Why does calling abort() on ajax request cause error in ASP.Net MVC (IE8)
- by user169867
I use jquery to post to an MVC controller action that returns a table of information. The user of the page triggers this by clicking on various links.
In the event the user decides to click a bunch of these links in quick succession I wanted to cancel any previous ajax request that may not have finished.
I've found that when I do this (although its fine from the client's POV) I will get errors on the web application saying that
"The parameters dictionary contains a null entry for parameter srtCol of non-nullable type 'System.Int32'"
Now the ajax post deffinately passes in all the parameters, and if I don't try and cancel the ajax request it works just fine.
But if I do cancel the request by calling abort() on the XMLHttpRequest object that ajax() returns before it finishes I get the error from ASP.Net MVC.
Example:
//Cancel any pevious request
if (req)
{
req.abort();
req = null;
}
//Make new request
req= $.ajax({
type: 'POST',
url: "/Myapp/GetTbl",
data: {srtCol: srt, view: viewID},
success: OnSuccess,
error: OnError,
dataType: "html"
});
I've noticed this only happen is IE8. In FF it seems to not cuase a problem.
Does anyone know how to cancel an ajax request in IE8 without causing errors for MVC?
Thanks for any help.
