Updated MultiColumnComboBox (markdown)

MultiColumnComboBox.md

@@ -7,6 +7,14 @@ ComboBox control that displays data in columns by using a [[DataGrid]].
 
 [[MultiColumnComboBox_multicolumncombobox.jpg]]
 
+### Remarks
+
+This control uses the DataGrid control included in the toolkit (Xceed Toolkit for WPF), which is a stripped version of the full DataGrid (Xceed DataGrid for WPF).
+
+If the MultiColumnComboBox is defined beside a full DataGrid in an application, references to Xceed.Wpf.DataGrid.dll (from Xceed Toolkit for WPF) and Xceed.Wpf.DataGrid.v#.#.dll (from Xceed Datagrid for WPF) will be necessary. You will be able to define the 2 controls in XAML, but when trying to set some properties, the XAML Parser will not act as expected.
+
+In this situation, you should set the properties of the MultiColumnComboBox and the Full DataGrid in code-behind. Since the DataGrid in the Toolkit is a stripped version of the full DataGrid, they will have the same namespaces and property names. A solution is to use aliases to differentiate the assemblies.
+
 ### Properties
 | Property | Description |
 | --- | --- |