title: Missing show/Add Data Source
body: <p>Any help will be appreciated,</p>
  
  <p>I am using Visual studio 2010 and currently I am making a project in ASP.net mvc3. In this project I have .edmx data sets and want to use that for making .rdlc report. So fnally I couldn't get the show data source in the data menu of the report design. What is wrong? And what is  the possible solution?</p>