public TransactionGridCellViewModel(
     TransactionGridColumnViewModel column,
     TransactionGridRowViewModel row,
     Transaction transaction)
 {
     _column = column;
     _row    = row;
     _row.PropertyChanged += Row_PropertyChanged;
     _transaction          = transaction;
     _isEditing            = row.IsEditing;
     CellType              = ColumnType.Transaction;
     _entity = transaction;
 }
 protected TransactionGridCellViewModel(TransactionGridColumnViewModel column)
 {
     Column = column;
 }