Visual Basic 2015 Unleashed

Querying in Memory Objects

LINQ to Object’s purpose is querying in-memory collections in a strongly typed fashion using recently added keywords that recall SQL instructions syntax and that are now integrated in the Visual Basic language. This enables the compiler to manage your actions at compile time. Before querying data, you need a data source. For example, imagine you have the following Product class that represents some food products of your company:

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Class Product    Property ProductID As Integer    Property ProductName As String    Property UnitPrice As Decimal    Property UnitsInStock As Integer    Property Discontinued As BooleanEnd Class

Coding Tip: Using Object Initializers

In this chapter and the next ...