c#: Hi,
Are there any solution for me to perform dependency injection in
Activator.CreateInstance(myType) ???

What is currently happening? What *exactly* are you trying to solve?
It /sounds/ like you might be looking for AppDomain.TypeResolve or
AppDomain.AssemblyResolve...

My web project using ObjectDataSource that create Business Logic
Controller class in my BLL proj, I have a ControllerContainer class
for retrieving existed controller in cache or adding new one to cache.
I want to perform injection like the TypeDescriptor and
TypeDescriptionProvider perform.
But it don't work with this case. I tried reflection to explore
objectdatasource 's code, and i finded out that it used
Activator.CreateInstance.

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If you want dependency ibjection the gold plated way, then
look at http://www.springframework.net/ !