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Код


public class LineF130View : Behavior<DataGrid>
    {
        public static readonly DependencyProperty CellStyleDataGridTextColumnProperty = DependencyProperty.Register("CellStyleDataGridTextColumn", typeof(Style), typeof(LineF130View), new PropertyMetadata(null));

        protected override void OnAttached()
        {
            base.OnAttached();
            AssociatedObject.AutoGeneratingColumn += new EventHandler<DataGridAutoGeneratingColumnEventArgs>(AssociatedObject_AutoGeneratingColumn);
        }

        public Style CellStyleDataGridTextColumn { get; set; }

        void AssociatedObject_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
        {
            if (e.PropertyName == "OPSName")
            {
                AssociatedObject.Columns.Clear();
                AssociatedObject.Columns.Add(
                    new DataGridTextColumn
                    {
                        Header = "Отделение",
                        Binding = new Binding("OPSName"),
                    }
                    );
                var elems = (IEnumerable<LineF130FromDataGrid>)AssociatedObject.ItemsSource;
                var dates = elems.SelectMany(el => el.Sums.Keys).Distinct();
                foreach (var d in dates)
                {
                    AssociatedObject.Columns.Add(
                        new DataGridTextColumn
                        {
                            Header = d.ToShortDateString(),
                            Binding = new Binding("[" + d.ToShortDateString() + "]") { StringFormat = "{0:c}" },
                            CellStyle = CellStyleDataGridTextColumn,
                        });
                }


                e.Cancel = true;
            }
            else
            {
                e.Cancel = false;
            }
        }

        protected override void OnDetaching()
        {
            base.OnDetaching();
            AssociatedObject.AutoGeneratingColumn -= new EventHandler<DataGridAutoGeneratingColumnEventArgs>(AssociatedObject_AutoGeneratingColumn);
        }
    }

Код


public class LineF130FromDataGrid
    {
        public LineF130FromDataGrid(Dictionary<DateTime, decimal> Sums)
        {
            this.Sums = Sums;
        }

        public string OPSName { get; set; }

        public Dictionary<DateTime, decimal> Sums;

        [Display(AutoGenerateField = false)]
        public decimal this[string date]
        {
            get
            {
                if (Sums.ContainsKey(Convert.ToDateTime(date)))
                    return Sums[Convert.ToDateTime(date)];
                else
                    return 0;
            }
        }
    }