// Get the access token by using the authorization code.
public string GetAccessToken()
{
Thread oauthThread = new Thread(new ThreadStart(GetToken));
oauthThread.SetApartmentState(ApartmentState.STA);
oauthThread.Start();
oauthThread.Join();
try
{
if (!string.IsNullOrEmpty(this._authorizationCode))
{
var accessTokenRequestBody = string.Format(this.AccessBody, this._clientId, this._clientSecret, this._authorizationCode, WebUtility.UrlEncode(RedirectUri));
AccessTokens tokens = GetTokens(this.RefreshUri, accessTokenRequestBody);
this._accessToken = tokens.AccessToken;
this._refreshToken = tokens.RefreshToken;
this._expiration = tokens.Expiration;
}
}
catch (WebException ex)
{
this._error = "GetAccessToken failed likely due to an invalid client ID, client secret, or authorization code";
}
return(this._accessToken);
}
public string GetAccessToken()
{
try
{
var accessTokenRequestBody = string.Format(this.AccessBody, this._clientId, this._clientSecret);
AccessTokens tokens = GetTokens(this.RefreshUri, accessTokenRequestBody);
this._accessToken = tokens.AccessToken;
this._refreshToken = tokens.RefreshToken;
this._expiration = tokens.Expiration;
}
catch (WebException ex)
{
this._error = "GetAccessToken failed likely due to an invalid client ID, client secret, or authorization code";
}
return(this._accessToken);
}
// Get the access token by using the refresh token.
public string RefreshAccessToken(string refreshToken)
{
if (string.IsNullOrEmpty(refreshToken))
{
throw new ArgumentException("The refresh token is missing.");
}
try
{
var refreshTokenRequestBody = string.Format(this.RefreshBody, this._clientId, this._clientSecret, WebUtility.UrlEncode(RedirectUri), refreshToken);
AccessTokens tokens = GetTokens(this.RefreshUri, refreshTokenRequestBody);
this._accessToken = tokens.AccessToken;
this._refreshToken = tokens.RefreshToken;
this._expiration = tokens.Expiration;
}
catch (WebException)
{
this._error = "RefreshAccessToken failed likely due to an invalid client ID or refresh token";
}
return(this._accessToken);
}
private static AccessTokens GetTokens(string uri, string body)
{
try
{
AccessTokens tokens = null;
var request = (HttpWebRequest)WebRequest.Create(uri);
request.Method = "POST";
request.Accept = "application/json";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = body.Length;
using (Stream requestStream = request.GetRequestStream())
{
StreamWriter writer = new StreamWriter(requestStream);
writer.Write(body);
writer.Close();
}
var response = (HttpWebResponse)request.GetResponse();
using (Stream responseStream = response.GetResponseStream())
{
var reader = new StreamReader(responseStream);
string json = reader.ReadToEnd();
reader.Close();
tokens = JsonConvert.DeserializeObject(json, typeof(AccessTokens)) as AccessTokens;
}
return(tokens);
}
catch (Exception ex)
{
throw;
}
}