DataGridTemplateColumn column = new DataGridTemplateColumn();FrameworkElementFactory factoryViewer = null;Binding b = null;factoryViewer = new FrameworkElementFactory(typeof(RichTextBoxExtended));b = new Binding() { Converter = new AlarmTreeAttributeConverter(), ConverterParameter = par, Mode = BindingMode.OneWay };factoryViewer.SetValue(RichTextBoxExtended.DataContextProperty, b);DataTemplate cellTemplate = new DataTemplate();cellTemplate.VisualTree = factoryViewer;column.CellTemplate = cellTemplate;