compiler does not recognize System.Runtime.Serialization.DataContractSerializer c#

Question

I try to use System.Runtime.Serialization.DataContractSerializer, but I get a compiler error:

"The type or namespace 'DataContractSerializer' does not exist in the namespace 'System.Runtime.Serialization' "

What could be causing this error?

Answer 1

Add reference to System.Runtime.Serialization assembly in your project.