I have authored a special UserControl base class, which I intend for a group of UserControls to inherit from.
The issue is this: the base class is compiled into an assembly, for it is unlikely to change its logic/process. The inheriting UserControls have Codebehind, but are NOT compiled into the same assembly; they are added/removed on a more flexible basis. They use the Src attribute rather than Codebehind.
In this manner, it will throw exception complaining the base class can't be found, since there's no reference to the assembly. It can work only (of course) when they are compiled together.
How can one reference an assembly of the base class in the raw-text Codebehind?
The melody of logic will always play out the truth. ~ Narumi Ayumu, Spiral