Retrieve Gmail contacts using C#

Karthi Keyan

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.

5 Replies

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Karthi Keyan10y ago
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 Singh10y ago
Hi check the link
http://www.codeproject.com/Tips/288295/Fetch-Gmail-Contacts
Rajeesh Menoth10y ago
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 Keyan10y ago
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.
Rajeesh Menoth10y ago
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