The .NET Framework 2.0 adds a new feature: SetAdded, SetModified. You use this feature to set DataRow‘s RowState value programatically.

This is applicable only when the current DataRow‘s RowState is Unchanged.

Simply use the following steps:

1. Make the necessary changes to the DataRow.
2. Call AcceptChanges() for the DataRow. When invoking AcceptChanges, any DataRow object still in edit mode successfully ends its edit. Each DataRow‘s RowState property also changes; the Added and Modified rows become Unchanged, and the Deleted rows are removed:

   dsCopySess.Tables["DataTableName"].Rows[0].AcceptChanges(); 

3. Set the RowState as desired:

   dsCopySess.Tables["DataTableName"].Rows[0].SetAdded();