April 2003
Beginner to intermediate
620 pages
21h 48m
English
Content preview from ADO.NET in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Committing and Discarding Changes
When a DataRow is
modified, ADO.NET marks the row as having a pending change and sets
the RowState of the DataRow to
Added, Modified, or
Deleted as appropriate. ADO.NET also maintains
version information by tracking both Original and
Current versions of each row. Together, this
information allows ADO.NET to identify the rows and columns that have
been changed.
The DataTable has three
methods—GetChanges( )
, AcceptChanges( ), and RejectChanges( )—that can
commit or discard the changes made to a DataTable
since it was last loaded or since AcceptChanges( )
was last called. These methods function identically to the same
methods for the DataSet as they are described in
Chapter 6. Also, when these methods are called on
a DataSet, they are implicitly called on all
tables contained within the DataSet.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.