title: Problem with image column in XtraTreeList
body: <p>I use XtraTreeList control.</p>
  
  <p>There are 2 columns: first for text and second for icon</p>
  
  <p>Problem : I can't change default icon (zero index in corresponding imagelist). There are 3 images in imagelist.</p>
  
  <p>For example I need to show icon which is located at 2 index</p>
  
  <p>Code</p>
  
  <pre><code> TreeListColumn col = treeList1.Columns.Add();
              col.Caption = "Text";
              col.Visible = true;
  
              TreeListColumn colImage = treeList1.Columns.Add();
              colImage.Caption = "ImageColumn";
              colImage.Visible = true;
  
  
              RepositoryItemImageEdit imageEdit = new RepositoryItemImageEdit();
              imageEdit.Images = imageList;
  
              treeList1.RepositoryItems.Add(imageEdit);
              colImage.ColumnEdit = imageEdit;
  
              treeList1.BeginUnboundLoad();
  
              TreeListNode node = treeList1.AppendNode(new object[] { "trololo", 2}, null);
  
              node.SetValue(colImage.AbsoluteIndex, 2);
  
              treeList1.EndUnboundLoad();
  </code></pre>