fastest and best approach to migrate a web application from 2.0 to 3.5 framework?

I have an application developed using the 2.0 fr开发者_运维知识库amework, then I need to migrate it into 3.5 framework? is there any fastest way and best approach to do this?

There is no migration. .NET 3.5 is .NET 2.0 SP2 plus some new assemblies.

Open your project in Visual Studio (keep a backup) then goto project properties and set the target .net framework to 3.5.

save your settings and then compile the project, if you find any errors resolve them and you are good to go.

I think you have to use the VS IDE to change the .NET edtion,if you change the .net edition,it may cause some bug,so,after you changed it,you'd better rebuild the solution at first.