What is design pattern in .net ?

Question

I want to design the architecture of .net web application.how to decide which pattern have to use as per scenario wise? Let say for banking or payroll system like application.

Answer 1

If you've not seen this already take a look at http://www.dofactory.com/Patterns/Patterns.aspx

Includes most common design patterns and also includes UML diagrams and real world examples.

Answer 2

I understand why you are looking for a 'design pattern' before starting out on a new project, but you would really need to focus in on particular aspects of the system before knowing what kind of design pattern to investigate, for example I recommend you investigate Model View Controller when talking about ASP.NET web applications, and looking into Inversion of Control to name but two.

One recommendation would be to make http://sharparchitecture.net/ your first port of call. Download and study this - don't just start using it blindly. It can be a great starting point for a new project and will introduce you to most of the patterns you will need to encounter.

DC