I\'m still learning web API, so pardon me if my question sounds stupid.
I have this in my StudentController:
public HttpResponseMessage
This is another issue related to invalid property values in an Angular Typescript request.
This is was related to the conversion between a Typescript number to an int(Int32) in C#. I was using Ticks (UTC milliseconds) which is larger than the signed, Int32 range (int in C#). Changed the C# model from int to long and everything worked fine.