title: LookUpEdit DisplayFormat FormatString
body: <p>I'am having simple problem with <a href="http://help.devexpress.com/#WindowsForms/clsDevExpressXtraEditorsLookUpEdittopic" rel="nofollow">DevExpress LookUpEdit</a> DisplayFormat. I want to achieve results in lookUpEdit like:<br>
  Document type (<em>.doc)<br>
  Document type (</em>.docx)</p>
  
  <pre><code>const string defaultExtensionsList = "doc;docx;xlsx;xls;pdf;txt";
  //...
  var column = new LookUpColumnInfo("Column", "Extensions")
  {
      Visible = true,
      //FormatType = FormatType.Custom,
      //FormatString ="Document type (*.{0})",
      Alignment = HorzAlignment.Near
  };
  ExtensionsLookup.Properties.DisplayFormat.FormatType = FormatType.Custom;
  ExtensionsLookup.Properties.DisplayFormat.FormatString = "Document type (*.{0})";
  ExtensionsLookup.Properties.EditFormat.FormatType = FormatType.Custom;
  ExtensionsLookup.Properties.EditFormat.FormatString = "Document type (*.{0})";
  ExtensionsLookup.Properties.Columns.Add(column);
  
  var bindingList = defaultExtensionsList.Split(';').ToList();
  ExtensionsLookup.Properties.DataSource = bindingList;
  </code></pre>