Note that Lists with simple type objects (for example, List) are not supported.
Similarly, if a Data Grid is bound to a data source that implements the IBindingList interface, the availability of row operations depends on the Boolean AllowNew and AllowRemove settings. For example, the ExcelDataSource is a read-only data source, so data in a grid bound to this source cannot be edited.
You and your users can add and remove Data Grid rows only if your data source has such API. The Data Grid uses methods of the data source assigned to the DataSource property to add and remove rows.
