Retrieve Gmail contacts using C#

Question

Hi. I want to retrieve the Gmail contacts in my windows application. i google it. i got plenty of topics. in that they told use OAuth.v2.0. I created the project got the client id secret id. but i dont know how to use the code they given. and where i want to use that. i need the full detailed code from your side. i dont know how explain. thanks in advance.

Rajeesh Menoth · Answer

Hi Check the following examples. Just follow the steps in the given articles. Reference : http://www.aspdotnet-suresh.com/2010/04/import-contacts-from-gmail.html http://www.aspsnippets.com/Articles/Import-Contacts-from-Google-Gmail-Account-in-ASPNet-using-C-and-VBNet.aspx http://dot-nettuts.blogspot.in/2012/08/how-to-import-contacts-from-gmail-using.html

Karthi Keyan · Answer

hi vinay sir Thanks for your replay. I was tried that code. but that's not working. that shown the error while running. That is Execution of authentication request returned unexpected result: 404. I paste My code here. i verified this code with the many sites. try { DataSet ds = new DataSet(); DataTable dt = new DataTable(); DataColumn C2 = new DataColumn(); C2.DataType = Type.GetType(System.String); C2.ColumnName = EmailID; dt.Columns.Add(C2); RequestSettings rs = new RequestSettings(App_Name Uname UPassword); rs.AutoPaging = true; ContactsRequest cr = new ContactsRequest(rs); Feed f = cr.GetContacts(); foreach (Contact t in f.Entries) /// I got the error here.. { foreach (EMail email in t.Emails) { DataRow dr1 = dt.NewRow(); dr1[EmailID] = email.Address.ToString(); dt.Rows.Add(dr1); } } ds.Tables.Add(dt); return ds; }

Vinay Singh · Answer

Hi check the link http://www.codeproject.com/Tips/288295/Fetch-Gmail-Contacts

Rajeesh Menoth · Answer

Hi Check this following reference : http://stackoverflow.com/questions/30764760/authentication-request-returned-unexpected-result-404 http://forums.asp.net/t/2053854.aspx?Execution+of+authentication+request+returned+unexpected+result+404+C+ https://social.msdn.microsoft.com/Forums/vstudio/en-US/2b21d022-5602-40a4-b21b-1c91bf84ddef/execution-of-authentication-request-returned-unexpected-result-404?forum=wcf

Karthi Keyan · Answer

hi. thanks for your replay. i already tried that code. but i got the error Execution of authentication request return unexpected result : 404 . what should i do now sir.