Chapter161:ImportGoogleContacts

Section161.1:Requirements

ToImportGoogle(Gmail)contactsinASP.NETMVCapplication,firstdownload”GoogleAPIsetup”Thiswillgrantthe following references:

usingGoogle.Contacts;

usingGoogle.GData.Client;

usingGoogle.GData.Contacts;

usingGoogle.GData.Extensions;

Add these to therelevant application.

Section161.2:Sourcecodeinthecontroller

usingGoogle.Contacts;

usingGoogle.GData.Client;

usingGoogle.GData.Contacts;

usingGoogle.GData.Extensions;

usingNewtonsoft.Json;

usingSystem;

usingSystem.Collections.Generic;

usingSystem.IO;

usingSystem.Linq;

usingSystem.Net;

usingSystem.Text;

usingSystem.Web;

usingSystem.Web.Mvc;

namespaceGoogleContactImport.Controllers

{

publicclassHomeController:Controller

{

publicActionResultIndex()

{

returnView();

}

publicActionResultImport()

{

stringclientId=””;                   //hereyouneedtoaddyourgoogleclientid

stringredirectUrl=”http://localhost:1713/Home/AddGoogleContacts”;//hereyour redirectactionmethodNOTE:youneedtoconfiguresameurlingoogleconsole

Response.Redirect(“https://accounts.google.com/o/oauth2/auth?redirect_uri=”+redirectUrl+”&amp&response_type=code&amp&client_id=”+clientId+ “&amp&scope=https://www.google.com/m8/feeds/&approval_prompt=force&access_type=offline”);

returnView();

}

publicActionResultAddGoogleContacts()

{

stringcode=Request.QueryString[“code”];

if(!string.IsNullOrEmpty(code))

{

varcontacts=GetAccessToken().ToArray();

if(contacts.Length>0)

{

//Youwillgetallcontactshere

returnView(“Index”,contacts);

}

else

{

returnRedirectToAction(“Index”,”Home”);

}

}

else

{

returnRedirectToAction(“Index”,”Home”);

}

}

publicList<GmailContacts>GetAccessToken()

{

stringcode=Request.QueryString[“code”];

stringgoogle_client_id=””;//yourgoogleclientId

stringgoogle_client_sceret=””;//yourgooglesecretkey

stringgoogle_redirect_url=”http://localhost:1713/MyContact/AddGoogleContacts”;

HttpWebRequest webRequest= (HttpWebRequest)WebRequest.Create(“https://accounts.google.com/o/oauth2/token”);

webRequest.Method=”POST”;

stringparameters=”code=”+code+”&client_id=”+google_client_id+ “&client_secret=”+google_client_sceret+”&redirect_uri=”+google_redirect_url+ “&grant_type=authorization_code”;

byte[]byteArray=Encoding.UTF8.GetBytes(parameters);

webRequest.ContentType=”application/x-www-form-urlencoded”; webRequest.ContentLength=byteArray.Length;

StreampostStream=webRequest.GetRequestStream();

//Addthepostdatatothewebrequest

postStream.Write(byteArray,0,byteArray.Length);

postStream.Close();

WebResponseresponse=webRequest.GetResponse();

postStream=response.GetResponseStream();

StreamReaderreader=newStreamReader(postStream);

stringresponseFromServer=reader.ReadToEnd();GooglePlusAccess

TokenserStatus=

JsonConvert.DeserializeObject<GooglePlusAccessToken>(responseFromServer);

/*End*/

returnGetContacts(serStatus);

}

publicList<GmailContacts>GetContacts(GooglePlusAccessTokenserStatus)

{

stringgoogle_client_id=””;                    //clientid

stringgoogle_client_sceret=””;//secretkey

/*GetGoogleContactsFromAccessTokenandRefreshToken*/

//stringrefreshToken=serStatus.refresh_token;

stringaccessToken=serStatus.access_token;

stringscopes=”https://www.google.com/m8/feeds/contacts/default/full/”;OAuth2ParametersoAuthparameters=newOAuth2Parameters()

{

ClientId=google_client_id,

ClientSecret=google_client_sceret,

RedirectUri=”http://localhost:1713/Home/AddGoogleContacts”, Scope=scopes,

AccessToken=accessToken,

//       RefreshToken=refreshToken

};

RequestSettingssettings=newRequestSettings(“AppName”,oAuthparameters); ContactsRequestcr=newContactsRequest(settings);

ContactsQueryquery=newContactsQuery(ContactsQuery.CreateContactsUri(“default”)); query.NumberToRetrieve=5000;

Feed<Contact>ContactList=cr.GetContacts();

List<GmailContacts>olist=newList<GmailContacts>();

foreach(ContactcontactinContactList.Entries)

{

foreach(EMailemailincontact.Emails)

{

GmailContactsgc=newGmailContacts();

gc.EmailID=email.Address;

vara=contact.Name.FullName; olist.Add(gc);

}

}

returnolist;

}

publicclassGmailContacts

{

publicstringEmailID

{

get{return_EmailID;}

set{_EmailID=value;}

}

privatestring_EmailID;

}

publicclassGooglePlusAccessToken

{

publicGooglePlusAccessToken()

{}

publicstringaccess_token

{

get{return_access_token;}

set{_access_token=value;}

}

privatestring_access_token;

publicstringtoken_type

{

get{return_token_type;}

set{_token_type=value;}

}

privatestring_token_type;

publicstringexpires_in

{

get{return_expires_in;}

set{_expires_in=value;}

}

privatestring_expires_in;

}

}

}

Section161.3:Sourcecodeintheview

Theonlyactionmethodyouneedtoaddistoaddanactionlinkpresentbelow

<ahref=’@Url.Action(“Import”,”Home”)’>ImportGoogleContacts</a>