Configure SerializerSettings.ContractResolver

Hello ,

•  I have write the following code in the "ConfigureServices" method :

            services.AddMvc().AddJsonOptions(opt =>{
                      opt.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
                      opt.SerializerSettings.ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver();
           });

• When I write  "http://localhost/api/customer" . the data returns as CamelCase .
• What I need it to be dynamic  if user writes http://localhost/api/customer?format=camel , the data will be returned as camel case .  And if he writes  http://localhost/api/customer?format=pascal , the data will be returned as pascal case .

        how can we implement this ?

    Thanks,

      Ibrahim