Develop Reference

ASP.NET PayPal Parallel Payments

I am needing some assistance with paypal Parallel payments C# I have tried the Classic API and the REST API that paypal has. I am running into cycles and don't know what else to do, I have tried to get chained payments working and I have google'd and there is a huge lack of support so Im now trying Parallel. Let you know i get an 500 internal Server error..
ReceiverList receiverList = new ReceiverList();
receiverList.receiver = new List<Receiver>();
Receiver secondaryReceiver = new Receiver((decimal?)2.00);
secondaryReceiver.email = "xxxxxxxxx#gmail.com";
secondaryReceiver.primary = false;
secondaryReceiver.paymentType = "GOODS";
receiverList.receiver.Add(secondaryReceiver);
Receiver primaryReceiver = new Receiver((decimal?)10.00);
primaryReceiver.email = "xxxxxxxxxxxxxxxxxx-facilitator#gmail.com ";
primaryReceiver.primary = true;
primaryReceiver.paymentType = "GOODS";
primaryReceiver.invoiceId = "123456789";
receiverList.receiver.Add(primaryReceiver);
RequestEnvelope requestEnvelope = new RequestEnvelope("en_US");
string actionType = "Pay";
string returnUrl = "https://devtools-paypal.com/guide/ap_chained_payment/dotnet?success=true";
string cancelUrl = "https://devtools-paypal.com/guide/ap_chained_payment/dotnet?cancel=true";
string currencyCode = "USD";
PayRequest payRequest = new PayRequest(requestEnvelope, actionType, cancelUrl, currencyCode, receiverList, returnUrl);
payRequest.ipnNotificationUrl = "http://replaceIpnUrl.com";
payRequest.feesPayer = "PRIMARYRECEIVER";
payRequest.trackingId = "123456789";
Dictionary<string, string> paypalConfig = new Dictionary<string, string>();
paypalConfig.Add("account1.apiUsername", "xxxxxxxxxxxxxxx-facilitator_api1.gmail.com");
paypalConfig.Add("account1.apiPassword", "xxxxxxxxxxxxxxxxxxx");
paypalConfig.Add("account1.apiSignature", "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
paypalConfig.Add("account1.applicationId", "APP-80W284485P519543T");
paypalConfig.Add("IPNEndpoint", "https://www.paypal.com/cgi-bin/webscr");
paypalConfig.Add("url", "https://www.paypal.com/webscr&cmd=_express-checkout&token=");
paypalConfig.Add("endpoint", "https://api-3t.paypal.com/2.0/");
paypalConfig.Add("mode", "sandbox");
PayPal.AdaptivePayments.AdaptivePaymentsService service = new PayPal.AdaptivePayments.AdaptivePaymentsService(paypalConfig);
PayResponse response = service.Pay(payRequest);
string redirectUrl = null;
if (!response.responseEnvelope.ack.ToString().Trim().ToUpper().Equals(AckCode.FAILURE.ToString()) && !response.responseEnvelope.ack.ToString().Trim().ToUpper().Equals(AckCode.FAILUREWITHWARNING.ToString()))
{
redirectUrl = "https://www.sandbox.paypal.com/webscr?cmd=_ap-payment&paykey=" + response.payKey;
}
Now as for the web.config I dont know exactly how to do it or really what to do. i Have found a few things but need of help.
Thanks

LinqToTwitter status update only works sometimes

I'm trying to send a tweet using LinqToTwitter. My problem is that it almost never works. I've gotten it to work maybe three times out of thirty, and usually that's when I try to debug. I'm thinking it might have something to do with timing and authentication, but I don't know how to do it. The code runs without errors, but no tweet is generated.
public static async Task SendTweetAsync(string text)
{
// Get the authorization credentials
var auth = GetCredentials();
// Create the twitter context
var ctx = new TwitterContext(auth);
try
{
Status responseTweet = await ctx.TweetAsync(text);
}
catch (Exception e) {
throw e;
}
}
private static AspNetAuthorizer GetCredentials()
{
return new AspNetAuthorizer
{
CredentialStore = new InMemoryCredentialStore()
{
ConsumerSecret = "##########",
ConsumerKey = "##########",
OAuthToken = "##########",
OAuthTokenSecret = "##########",
UserID = ##########
}
};
}

I don't know what happened to the answer that was here before, by #JoeMayo, but the thing that worked for me was to change the AspNetAuthorizer to SingleUserAuthorizer.
private static SingleUserAuthorizer GetCredentials()
{
return new SingleUserAuthorizer
{
CredentialStore = new InMemoryCredentialStore()
{
ConsumerSecret = "##########",
ConsumerKey = "##########",
OAuthToken = "##########",
OAuthTokenSecret = "##########",
UserID = ##########
}
};
}
Also, I added await auth.AuthorizeAsync();
var auth = GetCredentials();
await auth.AuthorizeAsync();
As I said, the credit should really go to #JoeMayo, but his answer is gone.

How to update status on twitter using C# and LINQ to Twitter library

I am writing an Metrol Style App to update status on my Twitter. I use LINQ to Twitter library. But I don't understand why my app throws exception 401 Unauthorized. Here is my code:
private void UpdateStatus()
{
// configure the OAuth object
var auth = new SingleUserAuthorizer
{
Credentials = new InMemoryCredentials
{
ConsumerKey = "ConsumerKey",
ConsumerSecret = "ConsumerSecret",
OAuthToken = "TwitterAccessToken",
AccessToken = "TwitterAccessTokenSecret"
}
};
using (var twitterCtx = new TwitterContext(auth, "https://api.twitter.com/1/", "https://search.twitter.com/"))
{
var tweet = twitterCtx.UpdateStatus("Hi everybody!"); // error here
viewTextBlock.Text = String.Empty;
viewTextBlock.Text = viewTextBlock.Text + "Status returned: " +
"(" + tweet.StatusID + ")" +
tweet.User.Name + ", " +
tweet.Text + "\n";
}
}

I just posted a blog entry on using OAuth in Windows 8 with LINQ to Twitter:
http://geekswithblogs.net/WinAZ/archive/2012/07/02/using-linq-to-twitter-oauth-with-windows-8.aspx
I also included a 401 FAQ in the LINQ to Twitter docs here:
http://linqtotwitter.codeplex.com/wikipage?title=LINQ%20to%20Twitter%20FAQ&referringTitle=Documentation

You can implement it using the Twitterizer assembly.
Firstly you can create a token which can be used to access Twitter and then using that particular token you can update TwitterStatus (Twitterizer.Core.TwitterObject.TwitterStatus).
Sample code is as follows.
public void CreateCachedAccessToken(string requestToken)
{
string ConsumerKey = ConfigurationManager.AppSettings["ConsumerKey"];
string ConsumerSecret = ConfigurationManager.AppSettings["ConsumerSecret"];
OAuthTokenResponse responseToken = OAuthUtility.GetAccessToken(ConsumerKey, ConsumerSecret, requestToken);
//Cache the UserId
Session["GetCachedUserId"] = responseToken.UserId;
OAuthTokens accessToken = new OAuthTokens();
accessToken.AccessToken = responseToken.Token;
accessToken.AccessTokenSecret = responseToken.TokenSecret;
accessToken.ConsumerKey = ConsumerKey;
accessToken.ConsumerSecret = ConsumerSecret;
Session["AccessToken"] = accessToken;
}
To update the TwitterStatus you can do as follows.
public OAuthTokens GetCachedAccessToken()
{
if (Session["AccessToken"] != null)
{
return (OAuthTokens)(Session["AccessToken"]);
}
else
{
return null;
}
}
TwitterStatus.Update(GetCachedAccessToken(), txtTweet.Trim());
The below mentioned method can be used to implement sign in.
protected string GetTwitterAuthorizationUrl()
{
string ConsumerKey = ConfigurationManager.AppSettings["ConsumerKey"];
string ConsumerSecret = ConfigurationManager.AppSettings["ConsumerSecret"];
OAuthTokenResponse reqToken = OAuthUtility.GetRequestToken(ConsumerKey, ConsumerSecret);
return "https://twitter.com/oauth/authorize?oauth_token=" + reqToken.Token;
}
Hope this helps.
If there are any clarifications please raise. Thanks

how to update twitter status from my asp.net web page

I have created an asp.net web page and I am using twitterizer.framework.dll.
Below is my c# code.
protected void btnTwitt_Click(object sender, EventArgs e)
{
//OAuthTokens tokens = new OAuthTokens();
//tokens.AccessToken = "--REDACTED--";
//tokens.AccessTokenSecret = "--REDACTED--";
//tokens.ConsumerKey = "--REDACTED--";
//tokens.ConsumerSecret = "--REDACTED--";
/////
//TwitterResponse<TwitterUser> showUserResponse = TwitterUser.Show(tokens, "twit_er_izer");
string TwitterUserName = "My twitter username";
string TwitterPassword = "my password";
// string TwitterMessage = txtShout.Text;
if (TwitterUserName != string.Empty && TwitterPassword != string.Empty)
{
try
{
//Twitter
// TwitterAccount twitter = new TwitterAccount(TwitterUserName, TwitterPassword);
//Twitter tw
Twitter twitter = new Twitter(TwitterUserName, TwitterPassword);
string TwitterMsg = txtShout.Text;
if (txtShout.Text.Length > 120)
{
TwitterMsg = TwitterMsg.Substring(0, 130) + "... For more update logon to DailyFreeCode.com";
}
else
{
TwitterMsg = TwitterMsg + "... For more update logon to DailyFreeCode.com";
}
twitter.Status.Update(TwitterMsg);
//Twitterizer.TwitterStatus.Update(tokens,TwitterMsg);
lblTwitMsg.Text = "Your have shout successfully on http://twitter.com/" + TwitterUserName;
}
catch (Exception ex)
{
Response.Write("<b>" + ex.Message + "</b><br>" + ex.StackTrace);
}
}
}
Now, I am getting error authorization failed.
On this line
twitter.Status.Update(TwitterMsg);
Plz help me, thanks!

It appears as though you're using Twitterizer version 1.x, but trying to copy code examples from Twitterizer version 2.x. Twitter twitter = new Twitter(TwitterUserName, TwitterPassword); is a dead giveaway. 2.x no longer uses that syntax.
Twitter no longer allows access to the API by supplying username and password. The tokens ARE your username and password, in a manner of speaking.

If you use the twitterizer framework you shouldn't be passing the username/password. You need to fill:
OAuthTokens tokens = new OAuthTokens();
tokens.AccessToken = "XXX";
tokens.AccessTokenSecret = "XXX";
tokens.ConsumerKey = "XXX";
tokens.ConsumerSecret = "XXX";
you can do this by using the following three methods from the framework:
1:
public static Uri BuildAuthorizationUri(
string requestToken
)
2:
public static OAuthTokenResponse GetRequestToken(
string consumerKey,
string consumerSecret,
string callbackAddress
)
3:
OAuthTokenResponse accessToken = OAuthUtility.GetAccessToken(consumerKey, consumerSecret, requestToken, verifier);
look it up here

Accessing Google Docs with GData

Working Platform: ASP.NET 4.0 C# ( Framework Agnostic )
Google GData is my dependency
using Google.GData.Client;
using Google.GData.Extensions;
using Google.GData.Documents;
I have two pages Auth and List.
Auth redirects to Google Server like this
public ActionResult Auth()
{
var target = Request.Url.ToString().ToLowerInvariant().Replace("auth", "list");
var scope = "https://docs.google.com/feeds/";
bool secure = false, session = true;
var authSubUrl = AuthSubUtil.getRequestUrl(target, scope, secure, session);
return new RedirectResult(authSubUrl);
}
Now it reaches the List Page if Authentication is successful.
public ActionResult List()
{
if (Request.QueryString["token"] != null)
{
String singleUseToken = Request.QueryString["token"];
string consumerKey = "www.blahblah.net";
string consumerSecret = "my_key";
string sessionToken = AuthSubUtil.exchangeForSessionToken(singleUseToken, null).ToString();
var authFactory = new GOAuthRequestFactory("writely", "qwd-asd-01");
authFactory.Token = sessionToken;
authFactory.ConsumerKey = consumerKey;
authFactory.ConsumerSecret = consumerSecret;
//authFactory.TokenSecret = "";
try
{
var service = new DocumentsService(authFactory.ApplicationName) { RequestFactory = authFactory };
var query = new DocumentsListQuery();
query.Title = "project";
var feed = service.Query(query);
var result = feed.Entries.ToList().ConvertAll(a => a.Title.Text);
return View(result);
}
catch (GDataRequestException gdre)
{
throw;
}
}
}
This fails at the line var feed = service.Query(query); with the error
Execution of request failed: https://docs.google.com/feeds/default/private/full?title=project
The HttpStatusCode recieved on the catch block is HttpStatusCode.Unauthorized
What is wrong with this code? Do I need to get TokenSecret? If so how?

You need to request a token from Google and use it to intialize your DocumentsService instance.
Here's an example using Google's ContactsService. It should be the same for the DocumentsService.
Service service = new ContactsService("My Contacts Application");
service.setUserCredentials("your_email_address_here#gmail.com", "yourpassword");
var token = service.QueryClientLoginToken();
service.SetAuthenticationToken(token);
But as you mentioned, you are using AuthSub. I jumped the gun a bit too fast.
I see that you are requesting a session token. According to the documentation of the API you must use the session token to authenticate requests to the service by placing the token in the Authorization header. After you've set the session token, you can use the Google Data APIs client library.
Here's a complete example (by Google) on how to use AuthSub with the .NET client library:
http://code.google.com/intl/nl-NL/apis/gdata/articles/authsub_dotnet.html
Let me include a shortened example:
GAuthSubRequestFactory authFactory =
new GAuthSubRequestFactory("cl", "TesterApp");
authFactory.Token = (String) Session["token"];
CalendarService service = new CalendarService(authFactory.ApplicationName);
service.RequestFactory = authFactory;
EventQuery query = new EventQuery();
query.Uri = new Uri("http://www.google.com/calendar/feeds/default/private/full");
EventFeed calFeed = service.Query(query);
foreach (Google.GData.Calendar.EventEntry entry in calFeed.Entries)
{
//...
}
And if I see correctly your example code pretty follows the same steps, except that you set the ConsumerKey and ConsumerSecret for the AuthFactory which is not done in the example by Google.

Used the 3-legged OAuth in the Google Data Protocol Client Libraries
Sample Code
string CONSUMER_KEY = "www.bherila.net";
string CONSUMER_SECRET = "RpKF7ykWt8C6At74TR4_wyIb";
string APPLICATION_NAME = "bwh-wssearch-01";
string SCOPE = "https://docs.google.com/feeds/";
public ActionResult Auth()
{
string callbackURL = String.Format("{0}{1}", Request.Url.ToString(), "List");
OAuthParameters parameters = new OAuthParameters()
{
ConsumerKey = CONSUMER_KEY,
ConsumerSecret = CONSUMER_SECRET,
Scope = SCOPE,
Callback = callbackURL,
SignatureMethod = "HMAC-SHA1"
};
OAuthUtil.GetUnauthorizedRequestToken(parameters);
string authorizationUrl = OAuthUtil.CreateUserAuthorizationUrl(parameters);
Session["parameters"] = parameters;
ViewBag.AuthUrl = authorizationUrl;
return View();
}
public ActionResult List()
{
if (Session["parameters"] != null)
{
OAuthParameters parameters = Session["parameters"] as OAuthParameters;
OAuthUtil.UpdateOAuthParametersFromCallback(Request.Url.Query, parameters);
try
{
OAuthUtil.GetAccessToken(parameters);
GOAuthRequestFactory authFactory = new GOAuthRequestFactory("writely", APPLICATION_NAME, parameters);
var service = new DocumentsService(authFactory.ApplicationName);
service.RequestFactory = authFactory;
var query = new DocumentsListQuery();
//query.Title = "recipe";
var feed = service.Query(query);
var docs = new List<string>();
foreach (DocumentEntry entry in feed.Entries)
{
docs.Add(entry.Title.Text);
}
//var result = feed.Entries.ToList().ConvertAll(a => a.Title.Text);
return View(docs);
}
catch (GDataRequestException gdre)
{
HttpWebResponse response = (HttpWebResponse)gdre.Response;
//bad auth token, clear session and refresh the page
if (response.StatusCode == HttpStatusCode.Unauthorized)
{
Session.Clear();
Response.Write(gdre.Message);
}
else
{
Response.Write("Error processing request: " + gdre.ToString());
}
throw;
}
}
else
{
return RedirectToAction("Index");
}
}
This 2-legged sample never worked for me for google docs.