I do some work in c# but am new to OAUTH2. I've created a web app for v3 by following the hints in the documentation and some of the conversations in the community. Using the HttpClient I can get an OK response to my GetAsync command, but I'm never prompted to login and it just returns to the same page where I started (https://localhost:44365). If I run the URI https://api.cc.email/v3/idfed?client_id= and so on I do get prompted to log in but I never get to the localhost Redirect URI, I just get sent back to the https://api.cc...... page.
I've tried this as server flow and client flow and always end up with no login but no message either.
Any help would be appreciated so I can try something different. At this point I keep getting same result so I need to start again.
If it helps here it the code I'm running from a button on Default.aspx. I've tried a redirect of default.aspx as well as WebForm1 shown below.
public async void getCreds()
string u = System.Web.HttpUtility.UrlEncode("https://localhost:44356/WebForm1");
clientFlow cf = new clientFlow();
HttpClient httpClient = new HttpClient();
string y = cf.getAuthorizationUrl(u, "ccccccccccccccccccc");
Uri z = new Uri(y);
var httpResponseMessage1 = await httpClient.GetAsync(z);
public void Button1_Click(object sender, EventArgs e)
Task rslt = new Task(getCreds);
public class clientFlow
public string getAuthorizationUrl(string redirectUri, string clientId)
StringBuilder authURL = new StringBuilder();
I was developing on a Mac with Parallels running. I created a clean Win 10 install with VS 2019 and made it much further. Now if I copy the https://api.cc.email/v3.......... URL and run manually I at the call back works and I get an access_token.
I guess something about the combination of a Mac and Parallels keeps the process from running.
Now to get the URL to load automatically
View API documentation, code samples, get your API key.