XAF Notes

Add Button to a detail view - link

DomainObject Attributes

TextArea and Hide from ListView
[Size(SizeAttribute.Unlimited), VisibleInListView(true)]
       
XAF Display Label
[XafDisplayName("")]

[Association("FileLog-DonorFileRecords"), Aggregated]

https://documentation.devexpress.com/#CoreLibraries/CustomDocument2127
The retrieved collection of persistent objects can also be filtered. Use its XPBaseCollection.Filter property to apply the desired filter.

Criteria

https://documentation.devexpress.com/#CoreLibraries/CustomDocument2038

Validation Rule
https://documentation.devexpress.com/#eXpressAppFramework/CustomDocument113008

Rule to prevent record being deleted when there is record in the collection

[RuleRequiredField(DefaultContexts.Delete, InvertResult = true, CustomMessageTemplate = "The {TargetPropertyName} collection is not empty")]
        public XPCollection<WBSMapping> WBSMappings

        {
            get
            {
                return GetCollection<WBSMapping>("WBSMappings");
            }
        }

Sum in BO

public decimal TotalAmount
{
      get
      {
                object result = Session.Evaluate(typeof(ApplicationMain), CriteriaOperator.Parse("Sum(AmountL)"), CriteriaOperator.Parse("FileSource.Oid = ?", Oid));
                decimal res = Convert.ToDecimal(result);
                return res;
      }
}

        public bool IsNewRecord
        {
            get
            {
                return Session.IsNewObject(this);
            }
        }

//Disable all Delete button
https://documentation.devexpress.com/#eXpressAppFramework/CustomDocument112728

        protected override void OnActivated()
        {
            base.OnActivated();
            // Perform various tasks depending on the target View.
            DeleteObjectsViewController deleteController =
                Frame.GetController<DeleteObjectsViewController>();
            if (deleteController != null)
            {
                deleteController.Active["Deactivation in code"] = true;
                //    !(View.ObjectTypeInfo.Type == typeof(PostingPeriod));
            }
       }


Show Popup Windows
             var spc = View.CurrentObject as SpecialProjectClosure;
            //IObjectSpace iosp = XPObjectSpace.FindObjectSpaceByObject(refund);
            var iosp = Application.CreateObjectSpace();
            var chooseobj = iosp.CreateObject<ApplicationMain>();
            DetailView dv = Application.CreateDetailView(iosp, chooseobj);
            dv.ViewEditMode = ViewEditMode.Edit;
            ShowViewParameters svp = new ShowViewParameters();
            svp.Context = TemplateContext.PopupWindow;
            svp.CreateAllControllers = true;
            svp.TargetWindow = TargetWindow.NewModalWindow;
            svp.CreatedView = dv;
            DialogController dc = Application.CreateController<DialogController>();
            dc.SaveOnAccept = false;
            dc.Accepting += dc_AcceptingRecordSelect; // This is an event handler. The dc_Accepting will be executed when Accepting event happens (user click OK button of the window)
            dc.Tag = spc; // pass the current db connection so that we can use it inside the accepting function
            svp.Controllers.Add(dc);

Show Popup Windows from Action Button

            var refund = View.CurrentObject as Refund;
            //IObjectSpace iosp = XPObjectSpace.FindObjectSpaceByObject(refund);
            var iosp = Application.CreateObjectSpace();
            var chooseobj = iosp.CreateObject<ChooseApplicationMain>();
            chooseobj.DonatingWBS = iosp.GetObject(refund.DonatingWBS);
            DetailView dv = Application.CreateDetailView(iosp, chooseobj);
            dv.ViewEditMode = ViewEditMode.Edit;
            e.ShowViewParameters.Context = TemplateContext.PopupWindow;
            e.ShowViewParameters.CreateAllControllers = true;
            e.ShowViewParameters.TargetWindow = TargetWindow.NewModalWindow;
            e.ShowViewParameters.CreatedView = dv;
            DialogController dc = Application.CreateController<DialogController>();
            dc.SaveOnAccept = false;
            dc.Accepting += dc_AcceptingRecordSelect; // This is an event handler. The dc_Accepting will be executed when Accepting event happens (user click OK button of the window)
            dc.Tag = refund; // pass the current db connection so that we can use it inside the accepting function
            e.ShowViewParameters.Controllers.Add(dc);

Permission

Boolean isEditingGranted = DataManipulationRight.CanEdit(View, View.CurrentObject, LinkToListViewController.FindCollectionSource(Frame));
editAction.Active[isGrantedToEditKey] = isEditingGranted;

Master Detail

- To avoid saving of Master record while adding or editing Child record, assign e.ObjectSpace to View.ObjectSpace during ObjectCreating event

XPObjectSpace.FindObjectSpaceByObject Method

Use XAF Module library in Non-XAF application

  BarcodeApp app = new BarcodeApp();
  app.ConnectionString = connectionString;
  app.ApplicationName = "DAS";
  app.Modules.Add(new DAS.Module.DASModule());
  app.Setup();