I am trying to convert some data to JSON to send to the CloudFlare API. I am attempting to use Newtonsoft.Json.JsonConvert.SeriablizeObject() to accomplish this but I am getting the Intellisense error that the type name serializeObject does not exist in the type JsonConvert. I have the NuGet package Newtonsoft.Json installed but it does not recognize the SerializeObject() method. I am not sure what I am missing.
Its because you're calling the method wrong, remove the new operator from the line
var json = new JsonConvert.SerializeObject(updateDnsRecord);
to
var json = JsonConvert.SerializeObject(updateDnsRecord);