单击其他按钮时停止执行按钮单击

Question

consider the below two button click events , i want the output cancel_click event to stop the process of hellotest_click event and redirect

  protected async void hellotest_click(object sender, EventArgs e)
    {

        await Task.Run(() => hello1());
        await Task.Run(() => hello2());          
    }

      //if i click another button , say 

    protected async void cancel_click(object sender, EventArgs e)
    {

        Response.Redirect(Request.Url.GetLeftPart(UriPartial.Authority) + "/trial/main.aspx", false);
        Context.ApplicationInstance.CompleteRequest();         
    }

//  i want the output cancel_click event to stop the process of hellotest_click event and redirect.

Answer 1

Unfortunatelly I don't think this is possible in general case. Imagine your project gets as big as the SO and you use a farm of many servers to handle users. Different clicks might easily arrive to different servers.

Any solution I can imagine is either not that simple or doesn't work correctly for example if the user has several tabs.

Probably the best thing you can do is

• introduce some service for background execution

• introduce some registry of tasks being executed

• return ID of the newly created task immediately to the browser and show some progress UI

• regularly at some interval ask server about completion of the task

• when user clicks cancel, pass the ID of the task to the server and ask your service to stop executing that task by ID.