Calculate from SecuredObjectSpaceProvider's objects

Thanks Anatol,
About filter records, I cannot write VC in advance. That's because the role permission is defined manually after deployed. So is there a common method to filter the non Protected Content objects?
BRGDS/Wangbei

About your second suggestion. Would please give the steps to realize?
Thanks/Wangbei

Attached small sample use SecuredObjectSpaceProvider, and Sam have more right. John could not get the correct total.

>> So is there a common method to filter the non Protected Content objects?

You can iterate through object permissions of the current user and filter the current ListView based on their Criteria property. However, in this case, you need to take into account persistent classes' inheritance and that there can be several object permissions for the same type.
Another way to do this at the UI level is to handle control-specific events. Here is an example of how to do this for GridControl:

C#
public class HideProtectedContentRowsController : ViewController<ListView> {  
    protected override void OnViewControlsCreated() {  
        base.OnViewControlsCreated();  
        GridListEditor gridListEditor = View.Editor as GridListEditor;  
        if (gridListEditor != null) {  
            gridListEditor.GridView.CustomRowFilter += GridView_CustomRowFilter;  
        }  
    }  
    void GridView_CustomRowFilter(object sender, DevExpress.XtraGrid.Views.Base.RowFilterEventArgs e) {  
        GridView gridView = (GridView)sender;  
        object obj = gridView.GetRow(gridView.GetRowHandle(e.ListSourceRow));  
        if (!SecuritySystem.IsGranted(new ClientPermissionRequest(obj.GetType(), null, ObjectSpace.GetObjectHandle(obj), SecurityOperations.Read))) {  
            e.Visible = false;  
            e.Handled = true;  
        }  
    }  
    protected override void OnDeactivated() {  
        base.OnDeactivated();  
        GridListEditor gridListEditor = View.Editor as GridListEditor;  
        if (gridListEditor != null) {  
            gridListEditor.GridView.CustomRowFilter -= GridView_CustomRowFilter;  
        }  
    }  
}  

>> About your second suggestion. Would please give the steps to realize?

First, change the PayCard class so that the PayMoneyAmount property is not recalculated each time the PayCard object is loaded. Instead, implement the PayMoneyAmount property as a general writable persistent property. Then, implement a custom connection provider demonstrated in the Q359904 ticket and set the PayMoneyAmount property in its directBaseUow_BeforeCommitTransaction event handler when the PayCard or PayMoneyAmount object is changed. In this case, the property value will be calculated in a non-secured UnitOfWork that has access to all objects. However, there may be difficulties with updating the calculated property value in the UI.
Alternatively, you can implement an additional property that will return the calculated value using a non-secured UnitOfWork. Here is an example:

C#
private PayCard payCardFromParentSession;  
public decimal RealTotal {  
    get {  
        if (Session.ObjectLayer is SessionObjectLayer && payCardFromParentSession == null) {  
            payCardFromParentSession = ((SessionObjectLayer)Session.ObjectLayer).ParentSession.GetObjectByKey<PayCard>(Oid);  
        }  
        return payCardFromParentSession == null ? 0 : payCardFromParentSession.PayMoneyAmount;  
    }  
}  

Thanks Anatol,
You code is running well to hide the Protected Content row and also the calculation field get the right result.
BRGDS/Wangbei

You are welcome!

Hello Anatol,
Due to first solution faced other problem. https://www.devexpress.com/Support/Center/Question/Details/T154898
I am working on second way, as you mentioned.
========================
Then, implement a custom connection provider demonstrated in the Q359904 ticket and set the PayMoneyAmount property in its directBaseUow_BeforeCommitTransaction event handler when the PayCard or PayMoneyAmount object is changed. In this case, the property value will be calculated in a non-secured UnitOfWork that has access to all objects. However, there may be difficulties with updating the calculated property value in the UI.
========================
I want to know how to write  directBaseUow_BeforeCommitTransaction? Would you please give me some code sample?
Attache the screen shot and also the small sample I already include an custom connection provider 'MySecuredObjectSpaceProvider'
Thanks a lot.
BRGDS/Wangbei

The small sample I already include an custom connection provider 'MySecuredObjectSpaceProvider'

I apologize for the delay. We are overloaded today, and I cannot prepare an example right now. Thanks in advance for your patience.

Thanks Anatol.