How to set MEF Importing Constructor parameters?

See more:

MEF

Hi there

I have a class decorated with the ImportingConstructor attribute as follows:

[ImportingConstructor]
public MyClass([Import("Path")]string path, [Import("Key")]string key)

and can create an instance using CompositionContainer.GetExportedValue and
CompositionContainer.ComposeExportedValue to set the parameters.

However this only works for a first instance of the MyClass as CompositionContainer.ComposeExportedValue errors trying to create a new export which already exists.

Can anyone tell me how to set the import parameters for multiple instances of MyClass?

Thanks very much