Import Gmail Contacts Using C#

Manish Sharma,
AS I mentioned, please have a look at oAuth API. Please check this link, you will get an idea:
http://forums.asp.net/t/1961519.aspx?Importing+Google+Contacts+using+oAuth+API+vewrsion+3


Sample implementation of oAuth is on below link. Please check and modify it as per your need.
http://www.codeproject.com/Tips/359144/Legged-OAuth-Authentication-in-NET-Csharp 

Hello Shweta Lodha,


Thanks,i have try this link http://www.aspdotnet-suresh.com/2010/04/import-contacts-from-gmail.html,this link not working on live server,please suggest me any link.

Hello Manish Sharma,
Yahoo, Gmail, etc provide an external API to import  contacts. This API is a open standard, called OAuth.

try this link

http://stackoverflow.com/questions/1085498/import-address-book-from-gmail-hotmail-yahoo-using-c-sharp-and-asp-net