Answer Posted / srinivas.t

windows applications use some shared DLLs. suppose
application1 is using the shared dell(named as Mydll.dll
which is installed when the application1 installed in to
the system), consider we need another applications called
application2 it is also having a shared dll(named as
Mydll.dll)and this application2 mydll.dll will repalce the
application1 MYdll.dll.

but the implementation of mydll.dll may be different in the
two applications. so that dll is not work properly. this is
called the DLL HEll.

.net gave a solution to this problem by giving the strong
name to the shred assemblies and it allows the side by side
execution.

go with this link for more details
http://msdn.microsoft.com/en-us/library/ms973843.aspx

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