.net odata.metadata未显示成员类型

Question

I have a type with a member that is not a simple type. For example,

class Person
{
   int a;
   Pmetadata personInfo;
}

Type Person is being returned as a response in an ODataController (WebAPI Framework). In the response json returned from the controller, the root object has an 'odata.metadata' decoration, but the object personInfo doesn't have the 'odata.metadata' decoration. I tried adding type Pmetadata to the EntityModel using a call as follows,

odatamodelbuilder.EntitySet<Pmetadata>("PersonMetadata");

but it hasn't helped.

What causes the odata.metadata to appear?

Answer 1

Add $format to your request URL may resolve your problem:

GET ~/Products?$format=application/json;odata=fullmetadata

There is diff between these two requests, please have a try:

1. http://services.odata.org/v3/OData/OData.svc/Products ?$format=application/json;odata=nometadata
2. http://services.odata.org/v3/OData/OData.svc/Products ?$format=application/json;odata=fullmetadata