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Everything about DataReader

In ADO.NET, a DataReader is a broad category of objects used to sequentially read data from a data source. DataReaders provide a very efficient way to access data, and can be thought of as a Firehose cursor from ASP Classic, except that no server-side cursor is used. A DataReader parses a Tabular Data Stream from Microsoft SQL Server, and other methods of retrieving data from other sources. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: DataReaderA 5-minute orientation
  2. Pick up a classic book: VB. Net and OLEDBThe most-reprinted book on the subject
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🗂️ The subject at a glance

  1. DataReader types
  2. Strong vs weak typing
  3. Common errors
  4. Sample code

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