Exemplos de TargetControl.IsGroupRowHandle em C# (CSharp)

Exemplo n.º 1

Arquivo: MasterDetailMVVMHelper.cs Projeto: DevExpress-Examples/how-to-control-the-master-row-expansion-from-the-view-model-in-the-master-detail-grid-e3834

        private void OnExpandedItemCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            if (e.Action == NotifyCollectionChangedAction.Add)
            {
                ToggleItemRowsExpansion(e.NewItems, true);
            }

            if (e.Action == NotifyCollectionChangedAction.Remove)
            {
                ToggleItemRowsExpansion(e.OldItems, false);
            }

            if (e.Action == NotifyCollectionChangedAction.Replace)
            {
                ToggleItemRowsExpansion(e.OldItems, false);
                ToggleItemRowsExpansion(e.NewItems, true);
            }

            if (e.Action == NotifyCollectionChangedAction.Reset)
            {
                for (int i = 0; i < TargetControl.VisibleRowCount; i++)
                {
                    int rowHandle = TargetControl.GetRowHandleByVisibleIndex(i);
                    if (TargetControl.IsGroupRowHandle(rowHandle))
                    {
                        continue;
                    }

                    if (TargetControl.IsMasterRowExpanded(rowHandle))
                    {
                        TargetControl.CollapseMasterRow(rowHandle);
                    }
                }
            }
        }