Few years back,I wrote an article on Facebook login Button integration in asp.net.Now i would like to explain the Integration of all type of Third party API's like Google,Facebook,Twitter,Yahoo and so on.. in Asp.net.
A Question raises immediately : Why we need to integrate these third party API's in our applications.why because for every New visitor or old visitor(those who are not registered in your site) it takes so much time to register in site.So many members (Including me !) have no time or interest to fill the complete registration and waiting for login information.its better to integrate Third party Login controls in application.it looks gr8 and save so much of time of the visitor because Almost Everybody Have Google or facebook or yahoo accounts.So by using their accounts they can easily access your site.. So Lets start the procedure of Integrating
First we will go with Google Login.
First We need to download DotNetOpenAuth to use Google Authetication.After downloading the DotNetOpenAuth zip file extract that file.
Next,Create a New Asp.net website and add the reference(dll) to your website which you downloaded before.
Procedure to add Reference to your application:
1. Right Click on the solution explorer and select add Reference
2. Next Click on the browse button and find the DotNetOpenAuth.dll file from zip file which you downloded before and click ok..thats it..Now its successfully added to your application
Procedure for coding :
1.Open the Default.aspx page and drag and drop one button from Toolbox
2.Next add the following properties to that button Id="btnGL"