title: Ajax Control Toolkit - ToolkitScriptManager is not a known element
body: <p>I downloaded the AjaxControlToolkit using nuget.exe then I tried to implement it in the project. As you can see with little success. I do not know why the system is not working properly.</p>
  
  <p>Error:</p>
  
  <pre><code>Error   14  The type or namespace name 'ToolkitScriptManager' does not exist in the namespace 'AjaxControlToolkit' (are you missing an assembly reference?) 
  </code></pre>
  
  <p>AjaxControlToolkit added to my project:</p>
  
  <p><img src="https://i.stack.imgur.com/PZwC4.png" alt="In master page I added this:"></p>
  
  <p>In master page I added this:</p>
  
  <pre><code>&lt;%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %&gt;
  </code></pre>
  
  <p>Picture with problem:<img src="https://i.stack.imgur.com/F1DO5.png" alt="assembly problem"></p>
  
  <p>I try use this tutorials:
  <a href="http://timscyclingblog.wordpress.com/2013/03/22/ajaxcontroltoolkit-version-7-0123-with-net-4-5/" rel="nofollow noreferrer">http://timscyclingblog.wordpress.com/2013/03/22/ajaxcontroltoolkit-version-7-0123-with-net-4-5/</a> </p>
  
  <p><a href="http://stephenwalther.com/archive/2012/09/20/september-2012-release-of-the-ajax-control-toolkit" rel="nofollow noreferrer">http://stephenwalther.com/archive/2012/09/20/september-2012-release-of-the-ajax-control-toolkit</a></p>