Core - The "Cannot change property 'DefaultSorting' when the XPCollection is not in design or initialization mode" error occurs in server mode

Hello Noxe,

UPDATED:
Starting with v16.2.4, you can implement an Action that would customize required options in the Application Model and recreate the View controls accordingly, as described in the How to refresh View appearance after making changes to the Application Model in code ticket.
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We researched this behavior and found out that using the LoadModel method is not correct here, because it leads to changing sorting options of the server collection when it is already bound to the grid, which is an exception situation in XPO.
So, I suggest you recreate the whole View via the XafApplication.CreateXXXView methods. See some example code at Change Editor Of View At Runtime.
Here is also my test code that worked fine:

C#
public class Q497593 : ViewController<ListView> {  

    public Q497593() {  
        SimpleAction action = new SimpleAction(this, "Q497593", DevExpress.Persistent.Base.PredefinedCategory.RecordEdit);  
        action.Execute += (s, e) => {  
            //View.LoadModel();  
            Frame.SetView(Application.CreateListView(Application.CreateObjectSpace(), View.ObjectTypeInfo.Type, View.IsRoot), true, Frame);  
        };  
    }  
}  

When using the proposed solution with a nested view then it loses its connection with master object and I get a list with all objects of the given type instead of the objects which belong to the master object only. Here is some code for this case:

C#
private void ResetView()  
{  
    var objectSpace = Application.CreateObjectSpace();  
    if (!View.IsRoot)  
    {  
        var propertyCollectionSource = (PropertyCollectionSource)((ListView)View).CollectionSource;  
        Frame.SetView(Application.CreateListView(View.Id,  
            Application.CreatePropertyCollectionSource(  
                objectSpace, propertyCollectionSource.MasterObjectType,  
                objectSpace.GetObject(propertyCollectionSource.MasterObject),  
                propertyCollectionSource.MemberInfo, View.Id, propertyCollectionSource.IsServerMode,  
                propertyCollectionSource.Mode),  
            View.IsRoot), true, Frame);  
    }  
    else  
    {  
        Frame.SetView(Application.ProcessShortcut(Frame.View.CreateShortcut()), true, Frame);  
    }  
}