No. In fact, there are no updateable cursors anywhere in .NET.

All of the data access in .NET is based on this disconnected data model. In .NET you push data into a DataSet. The DataSet keeps track of the changes that are made to the data. Then the DataSet is passed back to a data adapter, which will generate the appropriate insert, update, and delete statements in order to update the underlying data source.

Nicholas Paldino, MVP, .NET