My UI hangs while waiting for a sales request response using  Task<string> readAsync = response.Content.ReadAsStringAsync();   readAsync.Wait();  Do you have a non-blocking example for C# ?

You can add a timeout to your Wait like this:

// 10 seconds

readAsync.Wait(10000);

But I have the exact same code and have never had a problem:

                HttpResponseMessage response = client.SendRequest(triposurl, postBody, "application/json");
                Task<string> readAsync = response.Content.ReadAsStringAsync();

                readAsync.Wait();
                responseResult = readAsync.Result;