| DLL files are Dynamic Link Library files.
Basically they are exectuables that get called into existence whenever the functions or methods are required. It works in the same way that classes can be used in VbScript, Java, javascript, PHP etc.
The advantage is these functions and properties do not have to be loaded into memory on program start. They can be loaded and unloaded as and when required.
This will reduce the memory footprint of the application |