title: How to define tooltip for column header of gridcontrol in devexpress wpf
body: <p>I try to define tooltip for Column Header of Gridcontrol in devexpress wpf.
  But still it is showing Header in tooltip when it is trimm.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;dxg:GridControl ShowBorder="False" CustomColumnDisplayText="Grid_CustomColumnDisplayText"&gt;
                          &lt;dxg:GridControl.Columns&gt;                          
                              &lt;dxg:GridColumn Header="Header_Name" FieldName="Header_Name"&gt;
                                  &lt;dxg:GridColumn.ToolTip&gt;                                  
                                     TooltipContent
                                  &lt;/dxg:GridColumn.ToolTip&gt;                                
                              &lt;/dxg:GridColumn&gt;                          
                          &lt;/dxg:GridControl.Columns&gt;
                         
                          &lt;dxg:GridControl.View&gt;
                              &lt;dxg:TableView ShowFixedTotalSummary="True" VirtualizingPanel.IsVirtualizing="True"/&gt;
                          &lt;/dxg:GridControl.View&gt;
  &lt;/dxg:GridControl&gt;</code></pre>
  </div>
  </div>
  </p>