How to show a non-persistent class DetailView and filter related persistent lookup editors dynamically

Hello John,

I have just crafted a small sample for your scenario and attached a video showing its results in action.

Visual Basic
Imports System  
Imports System.ComponentModel  
Imports DevExpress.ExpressApp  
Imports DevExpress.ExpressApp.Actions  
Imports DevExpress.ExpressApp.DC  
Imports DevExpress.Persistent.Base  

Namespace MainDemo.Module.BusinessObjects  
 <DomainComponent>  
 Public Class NonPersistentClass  
  Implements INotifyPropertyChanged  

  Private department_Renamed As Department  
  <ImmediatePostData>  
  Public Property Department() As Department  
   Get  
    Return department_Renamed  
   End Get  
   Set(ByVal value As Department)  
    If department_Renamed Is value Then  
     Return  
    End If  
    department_Renamed = value  
    OnPropertyChanged("Department")  
   End Set  
  End Property  
  Private manager_Renamed As Contact  
  <DataSourceCriteria("Department.Oid == '@This.Department.Oid'")>  
  Public Property Manager() As Contact  
   Get  
    Return manager_Renamed  
   End Get  
   Set(ByVal value As Contact)  
    If manager_Renamed Is value Then  
     Return  
    End If  
    manager_Renamed = value  
    OnPropertyChanged("Manager")  
   End Set  
  End Property  
  Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged  
  Protected Overridable Sub OnPropertyChanged(ByVal propertyName As String)  
   RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(propertyName))  
  End Sub  
 End Class  
 Public Class T362128  
  Inherits WindowController  

  Public Sub New()  
   TargetWindowType = WindowType.Main  
   CType(New SimpleAction(Me, "T362128", "View", Sub(s, e)  
    Dim persistentType As Type = GetType(Contact)  
    Dim persistentObjectSpace As IObjectSpace = Application.CreateObjectSpace(persistentType)  
    Dim dv As DetailView = Application.CreateDetailView(persistentObjectSpace, New NonPersistentClass())  
    dv.ViewEditMode = DevExpress.ExpressApp.Editors.ViewEditMode.Edit  
    e.ShowViewParameters.CreatedView = dv  
   End Sub), SimpleAction)  
  End Sub  
 End Class  
End Namespace  

…

C#
using System.ComponentModel;  
using DevExpress.ExpressApp;  
using DevExpress.ExpressApp.Actions;  
using DevExpress.ExpressApp.DC;  
using DevExpress.Persistent.Base;  

namespace MainDemo.Module.BusinessObjects {  
    [DomainComponent]  
    public class NonPersistentClass : INotifyPropertyChanged {  
        private Department department;  
        [ImmediatePostData]  
        public Department Department {  
            get { return department; }  
            set {  
                if(department == value) {  
                    return;  
                }  
                department = value;  
                OnPropertyChanged("Department");  
            }  
        }  
        private Contact manager;  
        [DataSourceCriteria("Department.Oid == '@This.Department.Oid'")]  
        public Contact Manager {  
            get { return manager; }  
            set {  
                if(manager == value) {  
                    return;  
                }  
                manager = value;  
                OnPropertyChanged("Manager");  
            }  
        }  
        public event PropertyChangedEventHandler PropertyChanged;  
        protected virtual void OnPropertyChanged(string propertyName) {  
            if(PropertyChanged != null) {  
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));  
            }  
        }  
    }  
    public class T362128 : WindowController {  
        public T362128() {  
            TargetWindowType = WindowType.Main;  
            new SimpleAction(this, "T362128", "View", (s, e) => {  
                Type persistentType = typeof(Contact);  
                                IObjectSpace persistentObjectSpace = Application.CreateObjectSpace(persistentType);  
                                DetailView dv = Application.CreateDetailView(persistentObjectSpace, new NonPersistentClass());  
                dv.ViewEditMode = DevExpress.ExpressApp.Editors.ViewEditMode.Edit;  
                e.ShowViewParameters.CreatedView = dv;  
            });  
        }  
    }  
}  

Please refer to the following XAF documentation to learn more on which core features I used here:
eXpressApp Framework > Task-Based Help > How to: Filter Lookup List Views  (Scenario 5 - Filter the Lookup Property Collection Based on the Current Object's Properties)
eXpressApp Framework > Frequently Asked Questions > Extend Functionality > How do I show a window that represents data in XAF?