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Parallel tasks

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Peter Leleulya
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Posted on 25/11/2014 09:02:41

I would like to be able to do a parallel task, for example pre caching products on login.
It seems that a null reference exception occurs as soon as a Dynamicweb function is called, so it seems to have lost its context.
I’ve tried everything I could find. (parallel.invoke, async handler, threading, etc)
Does anyone have any best practices on that?


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Nicolai Høeg Pedersen
Posted on 25/11/2014 14:23:20
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Hi Peter

Usually that is not possible or hard to implement because Dynamicweb is depending on the httpcontext which is not available in a thread. But if you pass the httpcontext of the user triggering the new thread to the thread you are spawning, it should be possible.

Here is an example:

http://stackoverflow.com/questions/8109526/the-cross-thread-usage-of-httpcontext-current-property-and-related-things

But it is not a problem free approach with long running threads etc. But it works for many scenarios.

Hope this can help you - otherwise please ellaborate what you are trying to achieve and we will have a look at what can be done.

BR Nicolai

 
Peter Leleulya
Posted on 25/11/2014 14:26:25
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Thanks Nicolai, I will give it a try !

 

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