Dynamically loading a DataTemplate for a gallery

           XElement element = new XElement("DataTemplate",
                                                            new XElement("Border",
                                                                new XAttribute("Width", "75"),
                                                                new XAttribute("BorderThickness", "2"),
                                                                new XAttribute("BorderBrush", "{DynamicResource {x:Static themes:RibbonCommonDictionary.WindowBackgroundBrushKey}}"),
                                                                new XAttribute("CornerRadius", "2"),
                                                                new XAttribute("Padding", "10"),
                                                                new XElement("StackPanel",
                                                                    new XElement("TextBlock",
                                                                        new XAttribute("Text", "{Binding Path=Notation}")),
                                                                    new XElement("TextBlock",
                                                                        new XAttribute("Text", "{Binding Path=Precision}")),
                                                                    new XElement("TextBlock",
                                                                        new XAttribute("Text", "{Binding Path=Overwrite}")))));


            string xaml = element.ToString();

            MemoryStream sr = new MemoryStream(Encoding.ASCII.GetBytes(xaml));

            ParserContext pc = new ParserContext();

            pc.XmlnsDictionary.Add("", "http://schemas.microsoft.com/winfx/2006/xaml/presentation");

            pc.XmlnsDictionary.Add("x", "http://schemas.microsoft.com/winfx/2006/xaml");

            pc.XmlnsDictionary.Add("themes", "clr-namespace:ActiproSoftware.Windows.Controls.Ribbon.Themes;assembly=ActiproSoftware.Ribbon.WPF30");

            DataTemplate datatemplate = (DataTemplate)XamlReader.Load(sr, pc);

            return datatemplate;