Hi Mou_kolkata,
For migrating service code, I suggest you refer the link below:
# How to: Migrate ASP.NET Web Service Code to the Windows Communication Foundation
https://msdn.microsoft.com/en-us/library/aa738697(v=vs.110).aspx
For migrating client code, I suggest you refer the link below:
# How to: Migrate ASP.NET Web Service Client Code to the Windows Communication Foundation
https://msdn.microsoft.com/en-us/library/aa751923(v=vs.110).aspx
Best Regards,
Edward
MSDN Community Support
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