title: RDLC Report Column Visibility Problem in Group By
body: <p>I have an rdlc report in asp.net.
  I have a table in it and I am using group by in that table. But the columns which I make Parent Group or child group has Column Visibility Disabled. </p>
  
  <p><img src="https://i.stack.imgur.com/23TaH.jpg" alt="enter image description here"></p>
  
  <p>Notes Column is in a group. See its visibility option is disabled.</p>
  
  <p>How can I hide that column on the basis of a criteria as I can do with the Exam Date column that is not in any group.
  Please help.</p>