MVC - Fix error - The type or namespace name 'Objects' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)

Error

The type or namespace name 'Objects' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)


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when executing the following code:
 System.Data.Objects.ObjectParameter result = new System.Data.Objects.ObjectParameter("result", typeof(int));

To fix it add the following reference
(assemblies tab, select Framework and add System.Data.Entity