private static IEnumerable <object> GetSelectedItems(DataGrid owningGrid, IndexToValueTable <bool> selectedItemsTable)
{
Debug.Assert(owningGrid != null);
Debug.Assert(owningGrid.DataConnection != null);
Debug.Assert(selectedItemsTable != null);
DataGridDataConnection dataConnection = owningGrid.DataConnection;
foreach (int rowIndex in selectedItemsTable.GetIndexes())
{
Debug.Assert(rowIndex > -1);
yield return(dataConnection.GetDataItem(rowIndex));
}
}
public DataGrid()
{
TabNavigation = KeyboardNavigationMode.Once;
KeyDown += DataGrid_KeyDown;
KeyUp += DataGrid_KeyUp;
GotFocus += DataGrid_GotFocus;
LostFocus += DataGrid_LostFocus;
IsEnabledChanged += DataGrid_IsEnabledChanged;
_loadedRows = new List<DataGridRow>();
_selectedItems = new DataGridSelectedItemsCollection(this);
_rowGroupHeaderStyles = new ObservableCollection<Style>();
_rowGroupHeaderStyles.CollectionChanged += RowGroupHeaderStyles_CollectionChanged;
_rowGroupHeaderStylesOld = new List<Style>();
RowGroupHeadersTable = new IndexToValueTable<DataGridRowGroupInfo>();
_validationResults = new List<ValidationResult>();
DisplayData = new DataGridDisplayData(this);
ColumnsInternal = CreateColumnsInstance();
RowHeightEstimate = DATAGRID_defaultRowHeight;
RowDetailsHeightEstimate = 0;
_rowHeaderDesiredWidth = 0;
DataConnection = new DataGridDataConnection(this);
_showDetailsTable = new IndexToValueTable<Visibility>();
_collapsedSlotsTable = new IndexToValueTable<Visibility>();
AnchorSlot = -1;
_lastEstimatedRow = -1;
_editingColumnIndex = -1;
_mouseOverRowIndex = null;
CurrentCellCoordinates = new DataGridCellCoordinates(-1, -1);
RowGroupHeaderHeightEstimate = DATAGRID_defaultRowHeight;
DefaultStyleKey = typeof(DataGrid);
}