C# 添加此Gmail共享

如何通过Gmail共享链接，我想使用电子邮件模板显示文本电子邮件。我想通过addthis_share设置备注、url。我的代码如下

  <script type="text/javascript">
var addthis_share = { templates: { email_template: 'myTemplate' }, email_vars: { note:      "hai", url: "Your Url" } };
   </script>
 <!-- AddThis Button BEGIN -->
 <div class="addthis_toolbox addthis_default_style ">
 <a class="addthis_button_preferred_1"></a>
 <a class="addthis_button_preferred_2"></a>
 <a class="addthis_button_preferred_3"></a>
  <a class="addthis_button_preferred_4"></a>
  <a class="addthis_button_compact"></a>
 <a class="addthis_counter addthis_bubble_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-528dd02b38e0dbb5"></script>

但它不起作用