protected IEnumerable <Cell> GetVisibleCells()
{
VirtualizingCellCollection collection = this.ParentPanel.ParentRowCells;
if (collection == null)
{
yield break;
}
foreach (string fieldName in this.GetVisibleFieldsName())
{
yield return(collection.GetCell(fieldName, false));
}
}
private IEnumerable <Cell> GetCellsToLayout(IEnumerable <Cell> visibleCells, IEnumerable <string> permanentScrollingFieldNames, VirtualizingCellCollection cellsCollection)
{
List <string> unhandledCells = permanentScrollingFieldNames.ToList();
foreach (var cell in visibleCells)
{
unhandledCells.Remove(cell.FieldName);
yield return(cell);
}
foreach (var fieldName in unhandledCells)
{
var cell = cellsCollection.GetCell(fieldName, false);
Debug.Assert(cell != null);
yield return(cell);
}
}
private IEnumerable<Cell> GetCellsToLayout( IEnumerable<Cell> visibleCells, IEnumerable<string> permanentScrollingFieldNames, VirtualizingCellCollection cellsCollection )
{
List<string> unhandledCells = permanentScrollingFieldNames.ToList();
foreach( var cell in visibleCells )
{
unhandledCells.Remove( cell.FieldName );
yield return cell;
}
foreach( var fieldName in unhandledCells )
{
var cell = cellsCollection.GetCell( fieldName, false );
Debug.Assert( cell != null );
yield return cell;
}
}