Step 1: Go to http://www.addthis.com/ and create a new account. You will get an ID that you will need to use in the below code.
 
Step 2: Select style of social media buttons.
 
Step 3: Select buttons you like and create a script and use that script in your ASP.NET page. 
 
Here is the code snippet in my ASP.NET page. 
     - <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>  
 
     - <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
 
     - <html xmlns="http://www.w3.org/1999/xhtml">  
 
     - <head id="Head1" runat="server">  
 
     - <title></title>  
 
     - <script type="text/javascript"> var addthis_config = { "data_track_addressbar": true };</script>  
 
     - <script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"  
 
     - temp_src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"></script>  
 
     - </head>  
 
     - <body>  
 
     - <form id="form1" runat="server">  
 
     - <div>  
 
     - hello testin of add this controls  
 
     - </div>  
 
     - <div>  
 
     - <p>  
 
     - Share Buttons</p>  
 
     - <div class="addthis_toolbox addthis_default_style ">  
 
     - <a class="addthis_button_tweet"></a><a class="addthis_button_pinterest_pinit"></a>  
 
     - <a class="addthis_counter addthis_pill_style"></a>  
 
     - </div>  
 
     - <script type="text/javascript"> var addthis_config = { "data_track_addressbar": true };</script>  
 
     - <script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"  
 
     - temp_src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"></script>  
 
     - </div>  
 
     - <div>  
 
     - <p>  
 
     - Follow Us</p>  
 
     - <div class="addthis_toolbox addthis_32x32_style addthis_default_style">  
 
     - <a class="addthis_button_facebook_follow" addthis:userid="YOUR-PROFILE"></a><a class="addthis_button_twitter_follow"  
 
     - addthis:userid="YOUR-USERNAME"></a><a class="addthis_button_linkedin_follow" addthis:userid="ggdfgdf">  
 
     - </a><a class="addthis_button_linkedin_follow" addthis:userid="gdfg" addthis:usertype="company">  
 
     - </a><a class="addthis_button_google_follow" addthis:userid="gdfgd"></a><a class="addthis_button_youtube_follow"  
 
     - addthis:userid="fdgdf"></a><a class="addthis_button_flickr_follow" addthis:userid="dfgdf">  
 
     - </a><a class="addthis_button_vimeo_follow" addthis:userid="dfgdf"></a><a class="addthis_button_pinterest_follow"  
 
     - addthis:userid="gdfg"></a><a class="addthis_button_instagram_follow" addthis:userid="dfgdf">  
 
     - </a><a class="addthis_button_foursquare_follow" addthis:userid="dfgdf">  
 
     - </a><a class="addthis_button_tumblr_follow" addthis:userid="dgfgdf"></a><a class="addthis_button_rss_follow"  
 
     - addthis:userid="gdfgdf"></a>  
 
     - </div>  
 
     - <script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"  
 
     - temp_src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"></script>  
 
     - </div>  
 
     - <div>  
 
     - Trending Content  
 
     - <div id="addthis_trendingcontent">  
 
     - </div>  
 
     - <script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"  
 
     - temp_src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-518a46984fa73489"></script>  
 
     - <script type="text/javascript">  
 
     - addthis.box("#addthis_trendingcontent", {  
 
     - feed_title: "fsdfsd",  
 
     - feed_type: "trending",  
 
     - feed_period: "month",  
 
     - num_links: 5,  
 
     - height: "auto",  
 
     - width: "auto"  
 
     - });  
 
     - </script>  
 
     - </div>  
 
     - <div>  
 
     - </div>  
 
     - </form>  
 
     - </body>  
 
     - </html>  
 
 
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