Design pattern for workflow

Question

I don't think this is a duplicate but I actually need some one wise to confirm my question.

My pattern is going to be similar too (albeit much more complex) the picture below (where my application starts from top to bottom).

It takes a complex object as part of the constructor and then goes through various processes (saved in different .dlls).

I've not taken on a project like this before and want to get it right - I know design patterns are designed to help and give guidance.

enter image description here

My question, what patterns could work. I am stuck on .NET 2.0. My research suggests sequence pattern.

So, am I limited to only the sequence pattern or does any one have another other suggestion?

Did you consider using Workflow foundation (msdn.microsoft.com/en-us/library/ms734631(v=vs.90).aspx). It has a visual editor too. Just google it - azerdark.wordpress.com/2010/04/16/… — Karel Frajták
– Karel Frajták, Commented Sep 17, 2012 at 14:51
Thank you Karel, I have updated my post - Sadly, I am stuck on .NET 2.0 and Workflow started from .Net 3.0. — Dave
– Dave, Commented Sep 17, 2012 at 14:56

It's actually me · Accepted Answer · 2012-09-17 15:25:40Z

8

I have written similar code, but not just with a single pattern. Initially my approach was to code all in Transaction Script pattern and then refactor. During refactoring I came across follwings;

Template pattern: Decoupled logic to seperate classes which I called an Activity (similar to WF), and these Activity classes behaved similar way and therefore used Template pattern.
Transaction Script pattern: An Activity itself is a Transaction Script and could accept Arguments, has a Fault property, and Results which it will be used, construct, stored during the execution.
Builder pattern: To wire up all the Acitivity classes for the business scenario, I ended up with Builder pattern.

answered Sep 17, 2012 at 15:25

It's actually me

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