I have two similar[all attributes are same.] structures within different namespaces.
Now when i try to copy values between the objects of these structures i am getti
You can't, automatically, just using the framework's built-in conversions.
The short names (i.e. within the namespace) are entirely irrelevant here - as far as the CLR is concerned, A.B.C.SomeType and A.B.C1.SomeType are as different as X.Y.Foo and A.B.Bar.
You should either write your own conversion routines, or (preferrably) avoid having two different types in the first place, if they do the same thing. Alternatively you could use a reflection-based approach to perform the conversion... but that's still not getting the runtime to do it.