如何中止称为Ajax方法的C＃.net

Question

I have a ajax.cs class and I am calling methods from javascript side. So for this I registered it on default.aspx page load like this.

Ajax.Utility.RegisterTypeForAjax(typeof(ajax));

Sometimes some methods taking a long time, At that time I want to abort this call. How can I abort this request?

I call method like this from js;

ajax.testMethod()

Answer 1

If you make your controller action return a Task, then you can have cancellation token as a parameter to the action. And this cancellation token is automatically triggered when the HTTP request is aborted. And in the action, you can handle the token however you like to cancel the long-running operation.

Answer 2

Not sure if it works, but instead of aborting the ajax from the C# side, why don't you cancel it from the js side? in your ajax configuration, you can add a timeout parameter which, when happens, triggers the .error() function you can define, or leave it blank if you just want it to stop executing.

For js:

var ajax = new XMLHttpRequest();
ajax.post('your url');
ajax.timeout(10000); //or any time in milliseconds to set a timeout.
ajax.ontimeout= function(){ }//optional, just if you want a callback when ajax times out

For jQuery:

$.ajax({
   url:'yoururl',
   timeout: 10000,
   error: function(){
   }
});