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Visual Basic 2015 Unleashed
book

Visual Basic 2015 Unleashed

by Alessandro Del Sole
July 2015
Intermediate to advanced content levelIntermediate to advanced
1300 pages
87h 27m
English
Sams
Content preview from Visual Basic 2015 Unleashed

Projection Operators

LINQ query expressions extract values from data sources and then push results into a sequence of elements. This operation of pushing items into a sequence is known as projection. Select is the projection operator for LINQ queries. Continuing the example of products shown in the previous section, the following query creates a new sequence containing all product names:

Dim productNames = From prod In products                   Select prod.ProductName

The query result is now an IEnumerable(Of String). If you need to create a sequence of objects, you can select each single item as follows:

Dim productSequence = From prod In products                    Select prod

This ...

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Publisher Resources

ISBN: 9780134196664Purchase book