ADO.NET DataReader Strategies
Ok, now that you’ve constructed a Command and executed a SELECT query you undoubtedly want to access the data returned. As with ADOc, ADO.NET can return data in a structure that contains both schema and data and additional metadata used to help in updating the data. You can also use lighter-weight (and faster) mechanisms that simply access the low-level data stream or a single value—that’s a DataReader, the subject of this chapter.
KeywordsXPath Query Parent Object Action Query Connection Object Signed Integer
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