private void SavePersistDesignerItem(IDiagramItem wholeDiagramToSave, IDiagramViewModel diagramViewModel) { //Save all PersistDesignerItemViewModel foreach (var persistItemVM in diagramViewModel.Items.OfType <PersistDesignerItemViewModel>()) { PersistDesignerItem persistDesignerItem = new PersistDesignerItem(persistItemVM.Id, persistItemVM.Left, persistItemVM.Top, persistItemVM.ItemWidth, persistItemVM.ItemHeight, persistItemVM.HostUrl); persistItemVM.Id = databaseAccessService.SavePersistDesignerItem(persistDesignerItem); wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(persistDesignerItem.Id, typeof(PersistDesignerItem))); } //Save all SettingsDesignerItemViewModel foreach (var settingsItemVM in diagramViewModel.Items.OfType <SettingsDesignerItemViewModel>()) { SettingsDesignerItem settingsDesignerItem = new SettingsDesignerItem(settingsItemVM.Id, settingsItemVM.Left, settingsItemVM.Top, settingsItemVM.ItemWidth, settingsItemVM.ItemHeight, settingsItemVM.Setting1); settingsItemVM.Id = databaseAccessService.SaveSettingDesignerItem(settingsDesignerItem); wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(settingsDesignerItem.Id, typeof(SettingsDesignerItem))); } //Save all GroupingDesignerItemViewModel foreach (var groupingItemVM in diagramViewModel.Items.OfType <GroupingDesignerItemViewModel>()) { GroupDesignerItem groupDesignerItem = new GroupDesignerItem(groupingItemVM.Id, groupingItemVM.Left, groupingItemVM.Top, groupingItemVM.ItemWidth, groupingItemVM.ItemHeight); if (groupingItemVM.Items != null && groupingItemVM.Items.Count > 0) { SavePersistDesignerItem(groupDesignerItem, groupingItemVM); } groupingItemVM.Id = databaseAccessService.SaveGroupingDesignerItem(groupDesignerItem); wholeDiagramToSave.DesignerItems.Add(new DiagramItemData(groupDesignerItem.Id, typeof(GroupDesignerItem))); } //Save all connections which should now have their Connection.DataItems filled in with correct Ids foreach (var connectionVM in diagramViewModel.Items.OfType <ConnectorViewModel>()) { FullyCreatedConnectorInfo sinkConnector = connectionVM.SinkConnectorInfo as FullyCreatedConnectorInfo; Connection connection = new Connection( connectionVM.Id, connectionVM.SourceConnectorInfo.DataItem.Id, GetOrientationFromConnector(connectionVM.SourceConnectorInfo.Orientation), GetTypeOfDiagramItem(connectionVM.SourceConnectorInfo.DataItem), sinkConnector.DataItem.Id, GetOrientationFromConnector(sinkConnector.Orientation), GetTypeOfDiagramItem(sinkConnector.DataItem)); connectionVM.Id = databaseAccessService.SaveConnection(connection); wholeDiagramToSave.ConnectionIds.Add(connectionVM.Id); } }