Is there a way to build a DataTemplate with only C#

Is there a way to build a DataTemplate without using the deprecated FrameworkElementFactory or the XamlReader.Load method of string interpretation to code (related question) or (another related)?

DataTemplate dt = new DataTemplate();
StackPanel sp = new StackPanel();
ComboBox cellComboBox = new ComboBox() { Visibility = Visibility.Collapsed };
CheckBox cellCheckBox = new CheckBox() { Visibility = Visibility.Collapsed };

sp.Children.Add(cellComboBox);
sp.Children.Add(cellCheckBox);

// then add the stackpanel somehow?

This is for a new program that may have to be supported for years. XamlReader string parsing at runtime for something that's got a constructor, methods, properties... feels kludgy. The FrameworkElementFactory has been deprecated for several versions but has never had a real replacement.