RestClient POST

SSL:

ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true;
var client = new RestClient(apihost);
            var request = new RestRequest(Method.POST);
            request.AddFile("Img", image1, "Img1");
            request.AddParameter("UserName", "PCK");
            IRestResponse response = client.Execute(request);
            return response.Content;