Web Api on the existing database

Question

Hi

 

I am new to Web Api, i need your help.. thanks in advance

 

I need to create web api web services from my existing database, can any one please help me on this.

 

I have created a new application, added a database in models folder [Ado.net data entity model].

now i have my database connected to my application.

i have created a new controller with template 'Api controller with read/write actions, using Entity Framework'

now i started browsing the application with api routing 'localhost:1033/api/products

this throws the exception The 'ObjectContent`1' type failed to serialize the response body for content type 'application/xml; charset=utf-8'. 

:(