web-api POST body object always null

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FromBody is a strange attribute in that the input POST values need to be in a specific format for the parameter to be non-null, when it is not a primitive type. (student here)

  1. Try your request with {"name":"John Doe", "age":18, "country":"United States of America"} as the json.
  2. Remove the [FromBody] attribute and try the solution. It should work for non-primitive types. (student)
  3. With the [FromBody] attribute, the other option is to send the values in =Value format, rather than key=value format. This would mean your key value of student should be an empty string…

There are also other options to write a custom model binder for the student class and attribute the parameter with your custom binder.

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