title: How to write condition on Filter String in code Reports Winforms devexpress?
body: <p>I designed a report form and map fields with columns of tables from dataset. Now I need to set condition, so I used <code>FilterString</code>. Inside report form DetailReport, I wrote code like this:</p>
  
  <p><code>DetailReport.FilterString = "[InvoiceNumber] = " + temp;</code></p>
  
  <p>Now I need this same code (<code>FilterString</code>) for whole form that is top left of form <code>Report Task</code> some properties are available in that Data Source there we add dataset, Data Member, Data Adapter then <code>FilterString</code> is available.</p>
  
  <p>Now I am able to add <code>FilterString</code> in Designer but I need to add <code>FilterString</code> in code ?? 
  I Tried this one but not working 
  <code>FilterString= "[InvoiceNumber] = " + temp"</code>
  <img src="https://i.stack.imgur.com/OSVK7.png" alt="enter image description here"></p>