private void LoadPerstistDesignerItems(IDiagramItem wholeDiagramToLoad, IDiagramViewModel diagramViewModel) { //load diagram items foreach (DiagramItemData diagramItemData in wholeDiagramToLoad.DesignerItems) { if (diagramItemData.ItemType == typeof(PersistDesignerItem)) { PersistDesignerItem persistedDesignerItem = databaseAccessService.FetchPersistDesignerItem(diagramItemData.ItemId); PersistDesignerItemViewModel persistDesignerItemViewModel = new PersistDesignerItemViewModel(persistedDesignerItem.Id, diagramViewModel, persistedDesignerItem.Left, persistedDesignerItem.Top, persistedDesignerItem.ItemWidth, persistedDesignerItem.ItemHeight, persistedDesignerItem.HostUrl); diagramViewModel.Items.Add(persistDesignerItemViewModel); } if (diagramItemData.ItemType == typeof(SettingsDesignerItem)) { SettingsDesignerItem settingsDesignerItem = databaseAccessService.FetchSettingsDesignerItem(diagramItemData.ItemId); SettingsDesignerItemViewModel settingsDesignerItemViewModel = new SettingsDesignerItemViewModel(settingsDesignerItem.Id, diagramViewModel, settingsDesignerItem.Left, settingsDesignerItem.Top, settingsDesignerItem.ItemWidth, settingsDesignerItem.ItemHeight, settingsDesignerItem.Setting1); diagramViewModel.Items.Add(settingsDesignerItemViewModel); } if (diagramItemData.ItemType == typeof(GroupDesignerItem)) { GroupDesignerItem groupDesignerItem = databaseAccessService.FetchGroupingDesignerItem(diagramItemData.ItemId); GroupingDesignerItemViewModel groupingDesignerItemViewModel = new GroupingDesignerItemViewModel(groupDesignerItem.Id, diagramViewModel, groupDesignerItem.Left, groupDesignerItem.Top, groupDesignerItem.ItemWidth, groupDesignerItem.ItemHeight); if (groupDesignerItem.DesignerItems != null && groupDesignerItem.DesignerItems.Count > 0) { LoadPerstistDesignerItems(groupDesignerItem, groupingDesignerItemViewModel); } diagramViewModel.Items.Add(groupingDesignerItemViewModel); } } //load connection items foreach (int connectionId in wholeDiagramToLoad.ConnectionIds) { Connection connection = databaseAccessService.FetchConnection(connectionId); DesignerItemViewModelBase sourceItem = GetConnectorDataItem(diagramViewModel, connection.SourceId, connection.SourceType); ConnectorOrientation sourceConnectorOrientation = GetOrientationForConnector(connection.SourceOrientation); FullyCreatedConnectorInfo sourceConnectorInfo = GetFullConnectorInfo(connection.Id, sourceItem, sourceConnectorOrientation); DesignerItemViewModelBase sinkItem = GetConnectorDataItem(diagramViewModel, connection.SinkId, connection.SinkType); ConnectorOrientation sinkConnectorOrientation = GetOrientationForConnector(connection.SinkOrientation); FullyCreatedConnectorInfo sinkConnectorInfo = GetFullConnectorInfo(connection.Id, sinkItem, sinkConnectorOrientation); ConnectorViewModel connectionVM = new ConnectorViewModel(connection.Id, diagramViewModel, sourceConnectorInfo, sinkConnectorInfo); diagramViewModel.Items.Add(connectionVM); } }