title: C# RDLC Expand All / Collapse All SubReport
body: <p>I am using following tools: -</p>
  
  <ul>
  <li>Visual Studio.NET 2013</li>
  <li>C#</li>
  <li>SQL Server 2014</li>
  </ul>
  
  <p>I have created a report, which contains a sub report. The main report displays the Sale records, while the sub report displays the details of each Sale record (Item details). Each Sale record displays a + sign on the start of the record. User click the + sign and the sub report (details for that specific Sale record) opens.</p>
  
  <p>I want to add a Expand All / Collapse All option to the report.</p>
  
  <p>I have searched a lot but all the articles are related to Groups not to the Sub Reports.</p>
  
  <p>Please tell how to expand/collapse all the records at once.</p>