title: Why sorting data in report viewer2010 doesn`t work?
body: <p>I use report viewer 2010 and I want to make interactive sort on each column from my report.
  I set in the rdlc file on each column the interactive sort in the Sort by field an expressions like:</p>
  
  <pre><code>=Fields!ClientName.Value
  </code></pre>
  
  <p>but when i run my report and click on the header icon it seems to do a refresh but after the data is not ordered. I tried to order the data in the dataSource but it does not work. My data is always sorted by the first column in the table. If I change this first column the data will be sorted after the change, but I want to sort by other columns.   </p>