May 2004
Intermediate to advanced
888 pages
22h 31m
English
Content preview from Delphi for .NET Developer’s GuideBecome 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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Working with DataTables
One of the most versatile components that Delphi contained is the TClientDataSet. While originally included for use in Delphi’s DataSnap technology, TClientDataSet turned out to be a useful object for manipulating in-memory tables.
Likewise, the typical usage of DataSet is to work on data from a data source that was retrieved through a DataAdapter. However, DataSet and DataTables are also in-memory structures that give you the same level of versatility offered by TClientDataSet. In fact, the DataTable most closely resembles the TClientDataSet. This section focuses on how to use the DataTable.
Defining Columns
To define columns in a DataTable, you can use either the Add() or AddRange() methods of the DataColumnCollection ...
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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.