internal void GenerateColumns()
{
var remove = _grid.Columns.Where(c => DynamicGrid.GetInfo(c) != null).ToList();
remove.ForEach(c => _grid.Columns.Remove(c));
AddColumns(_columns);
}
private void ColumnsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
AddColumns(e.NewItems);
break;
case NotifyCollectionChangedAction.Remove:
var remove = _grid.Columns.Where(column => e.OldItems.Contains(DynamicGrid.GetInfo(column))).ToList();
remove.ForEach(c => _grid.Columns.Remove(c));
break;
case NotifyCollectionChangedAction.Replace:
GenerateColumns();
break;
case NotifyCollectionChangedAction.Move:
break;
case NotifyCollectionChangedAction.Reset:
GenerateColumns();
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public DynamicGridColumn(DataGrid grid, IDynamicGridColumnInfo info)
{
_grid = grid;
DynamicGrid.SetInfo(this, info);
var notify = info as INotifyPropertyChanged;
if (notify != null)
{
notify.PropertyChanged += InfoPropertyChanged;
}
}
protected override FrameworkElement GenerateElement(DataGridCell cell, object dataItem)
{
if (dataItem == null || dataItem == CollectionView.NewItemPlaceholder)
{
return(base.GenerateElement(cell, dataItem));
}
//var items = dataItem as IEnumerable;
//if (items == null)
// throw new Exception(
// "When using DynamicGrid, ItemsSource must implement IEnumerable " +
// "and its members must implement IEnumerable. For better performance " +
// "its members should also implement IList.");
var manager = new CellManager(_grid, dataItem, Info);
DynamicGrid.SetCellManager(cell, manager);
cell.SetBinding(FrameworkElement.DataContextProperty, new Binding("Data")
{
Source = manager
});
return(base.GenerateElement(cell, manager.Data));
}
