How to insert multiple data templates into main date template - wpf

Question

I am using AvalonDock and MEF plugin architecture,
Each plugin returns a data template to host, host get the data template, insert to main data template.
Following are user controls that are converted to DataTemplates
MainMethodView: including a tab,
PluginA's MethodView: need to be inserted to MainMethodView's tab item 1.
PluginB's MethodView: need to be inserted to MainMethodView's tab item 2.
.....
Thanks.
Code: InitializePlugins() i have only could shows one plugin's datatemplate. and GetMethodViewTemplate() gives me error: Content of a ContentControl must be a single element.
reference: Link1
public void InitializePlugins(){
var templateSelector = new PanesTemplateSelector();
templateSelector.MethodViewTemplate = pluginService.Plugins[0].MethodViewTemplate;
_dockingManger.LayoutItemTemplateSelector = templateSelector;
}
private static DataTemplate GetMethodViewTemplate(PluginService pluginService) {
FrameworkElementFactory factory = new FrameworkElementFactory(typeof(MethodView));
foreach (var plugin in pluginService.Plugins) {
FrameworkElementFactory fef = new FrameworkElementFactory(typeof(ContentControl));
fef.SetValue(ContentControl.ContentTemplateProperty, plugin.MethodViewTemplate);
factory.AppendChild(fef);
}
DataTemplate dt = new DataTemplate();
dt.VisualTree = factory;
return dt;
}
Another problem is databinding, MainMethodViewModel has PluginMethodViewModels from plugins, How it could be binded to MainMethodView.

Answer 1

This is the solution I found. Share everyone.
Note: View1 and View2 are usercontrol, binding setting is in xaml file.
public MainWindow() {
InitializeComponent();
CreateTemplate4();
}
private void CreateTemplate4() {
var method = new MethodViewModel();
FrameworkElementFactory fefWrapper = new FrameworkElementFactory(typeof(TabControl));
foreach (var fred in method.Freds) {
DataTemplate dt1 = fred.Template;
FrameworkElementFactory fefTop = new FrameworkElementFactory(typeof(ContentControl));
fefTop.SetValue(ContentControl.ContentTemplateProperty, dt1);
fefTop.SetValue(ContentControl.ContentProperty, fred);
fefWrapper.AppendChild(fefTop);
}
DataTemplate dtWrapper = new DataTemplate(typeof(MethodViewModel));
dtWrapper.VisualTree = fefWrapper;
this.DataContext = method;
this.cc.ContentTemplate = dtWrapper;
}
class MethodViewModel {
public ObservableCollection<Fred> Freds { get; set; }
public MethodViewModel() {
Freds = new ObservableCollection<Fred>();
Freds.Add(new Fred1(1));
Freds.Add(new Fred2(2));
}
}
public class Fred {
public int X { get; set; }
public int y { get; set; }
public Fred(int x) {
this.X = x;
this.y = x + 1;
}
public DataTemplate Template { get; set; }
}
public class Fred1 : Fred {
public Fred1(int x) : base(x) {
FrameworkElementFactory factory = new FrameworkElementFactory(typeof(View1));
DataTemplate dt = new DataTemplate();
dt.VisualTree = factory;
this.Template = dt;
}
}
public class Fred2 : Fred {
public Fred2(int x) : base(x) {
FrameworkElementFactory factory = new FrameworkElementFactory(typeof(View2));
DataTemplate dt = new DataTemplate();
dt.VisualTree = factory;
this.Template = dt;
}
}