September 2003
Intermediate to advanced
624 pages
14h 27m
English
Content preview from ADO.NET CookbookBecome 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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Chapter 5. Copying and Transferring Data
Introduction
This chapter focuses on copying data between ADO.NET classes and between ADO and ADO.NET classes, serializing and deserializing data, and encrypting data and login credentials to build secure applications.
Copying rows from one DataTable to another and
copying tables from one DataSet to another are
operations performed frequently in data-centric applications. Recipe 5.1 and Recipe 5.2 show
different ways to copy data and discuss the advantages, limitations,
and disadvantages of the different approaches.
The DataReader provides connected forward-only,
read-only access to a data stream while the
DataSet provides disconnected access to data
stored as an in-memory relational database. There is no built-in
method to convert a DataReader to a
DataSet, so Recipe 5.3
shows how it’s done.
In addition, this chapter covers:
- Serializing and deserializing data
Serialization allows data conversion to a format that can be persisted or transported. The .NET framework supports serialization and deserialization with the
System.Runtime.Serializationnamespace. Support for binary, XML, and SOAP formats is built in and serialization can easily be customized if required. Recipe 5.4 and Recipe 5.5 show how to serialize and deserialize data.As well as copying data, ADO.NET supports merging disconnected data in
DataTableorDataSetobjects into each other. Recipe 5.6 shows how merging works and how to use the arguments that control the merge operation.- Security ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.