ASP.NET Response.Redirect & Server.Transfer

Yes, another hurdle of the day that I encountered when I was testing the process flow of a registration website that I was in-charged with.

In classic ASP, there are 2 methods that could be used to transfer/redirect to another page:
  1. Server.Transfer - What it does is that it will transfer all the state information like Session, Application, and all Request collections to another page, which the page will have the same Session ID as the previous page.
  2. Response.Redirect - Another method that would widely be used I believed. This method will stop all processes that are executed and then proceed to connect to a different URL. This method will not transfer the current state to the new URL.
The above methods can be executed from the ASP file with ease. Since ASP.NET has both methods provided to us, I would assume that it would behave the same. Yet, I was wrong.

ASP.NET is a totally new technology with an ASP.NET page ties with a background code written either in VB.NET or C#. Much like coding in Java Servlet, the background code is written in accordance to either VB.NET or C#, thus a lot of consideration to the process flow need to be dealt with.

Response.Redirect and Server.Transfer are 2 examples. According to some findings, if I tried to call a Response.Redirect within a try... catch... block, an Exception would be thrown and informed me that there is a thread being aborted. This happened because Response.Redirect will stop all the processes, and would call Response.End within itself to abort all processes. Thus the exception is thrown because Response.End being called to abort all processes. The solution to this would be to call the Response.Redirect outside of the try... catch... block, of which I would assume that the ideal time to call it is at the end of the code. I haven't found anything on Server.Transfer, of which I would assume that it is of the same problem.

Comments

Post a Comment

Popular posts from this blog

Yahoo! Messenger voice call & video call disabled, why?

Was trying to help my colleague to troubleshoot her laptop, where the Yahoo! Messenger voice chat & video chat are disabled even though the setup of the sound & video are all correctly configured.  Yet, it will still throw the error message "Your computer is not connected to the network", which is quite amazingly considered that the wireless network is working plus the Skype is able to make the call. After several finding on the Internet and on some help site, non of the solutions are able to solve the problem.  Then I recalled the other colleague is also using the same laptop and her Yahoo! Messenger is able to use video call & voice call.  I was guessing the whole time of what could be the possible cause that hers is working but not this one.  Then a thought came to my mind, could it be the firewall? The firewall is correctly configured, so what else inside there that is blocking the connection?  The other security software that's installed is the Trend
Read more

Sport's Injuries - Treatment for bruises

I have a knock on both my legs last Sunday during a Futsal session. I have a knock on my lower right shin, while sprain my left ankle. It is not a pleasant experience at all to have both legs injured. It is very painful and totally immobilized me. What's important right now is to get it treated. I have tried to elevate both my legs in order to not let the blood concentrated at the injured spot, plus put ice at the injured area. I have even consulted with a doctor regarding the injuries, and am thankful that there's nothing wrong with my right shin. Still, it's not healing that well because the swelling has not resided. Since I'm living alone, it will be hard for it to heal because I need to be mobilize all the time. With the help of the Internet, I'm trying to surf for information that could help to provide first-aid treatment. The following are my finding from the Internet and from family tradition treatment: Elevate the injured leg. Apply ice for about 30
Read more

Web Development: Disable, Validate, & Enable Buttons

I bounced into this problem during a Web UI development, of which I'd say it's quite a common issue. Whenever a button is clicked, ideally it would be good to disable it to avoid continuous clicking. Of course, it may not be the case in certain circumstances, i.e. loading of images, of which sometimes clicking the button again would surely making it load faster. However, in the latest development that I involved in, I need to make sure that the button as to be disabled to avoid continuous clicking that would cause some Javascript error that would cause the whole website to stop working. I've no idea why this is happening, and my only explanation should be because the execution time is short & it's AJAX, therefore the continuous clicking would cause some process not able to be executed timely and causing this issue. So after some research on the Internet, I found that in order to disable the button during a button click event that has a postback, the onclick event
Read more