How do you get the root namespace of an assembly?

Question

Given an instance of System.Reflection.Assembly.

Answer 1

Adding to all the other answers here, hopefully without repeating information, here is how I solved this using Linq. My situation is similar to Lisa's answer.

My solution comes with the following caveats:

• You're using Visual Studio and have a Root Namespace defined for your project, which I assume is what you're asking for since you use the term "root namespace"
• You're not embedding interop types from referenced assemblies

Dim baseNamespace = String.Join("."c,
    Me.GetType().Assembly.ManifestModule.GetTypes().
        Select(Function(type As Type)
                    Return type.Namespace.Split("."c)
                End Function
        ).
        Aggregate(Function(seed As String(), splitNamespace As String())
                        Return seed.Intersect(splitNamespace).ToArray()
                    End Function
        )
)