Does end user need to have .NET 3.5 or .NET 4.0 to run Silverlight 3 and 4 applications?

Does the end us开发者_运维知识库ers need to have .NET 3.5 or .NET 4.0 installed on their machines in order to run Silverlight 3 or 4 applications from within IE?

Nope but he need to install the runtime of silverlight and it needs to be the same version or higher as where the app is developed in

Plus Silverlight is backwards compatible (for the most part ;D ), so as long as they have the latest runtime they should be able to run older SL applications no problem.

Silverlight don't require full .net framework use Silverlight Apps. it use a CLR that is a subset of original .net framework classes only required to run silverlight apps. More info about required classes for Silverlight: http://msdn.microsoft.com/en-us/library/cc838194%28VS.95%29.aspx

plus if you have .net Silverlight runtime 4.0 you can run any silverlight app that is built using older version of silverlight.

Regards.