Hi Amritha,
Interop libraries are wrappers around COM/Active-X components Visual Studio
generates in order to use them in a .NET environment. They are usually
automatically generated when you add a reference to an unmanaged control to
a managed project. The methods and properties made available by the interop
library come from the methods and properties available on the original
control, in this case FileTransferCtl. If this is a 3rd party control,
check the provided documentation.
Remember to ship the interop.xxxx library when you ship your application, as
well as the original control.
Robin
