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However, it needs to process the tags inside (the three
GradientStop elements) a little differently. In this case, the parser recognizes that the GradientStops
property returns a GradientStopCollection object, and the GradientStopCollection
implements the IList interface. Thus, it assumes (quite rightly) that each GradientStop should
be added to the collection using the IList.Add() method:
Dim gradientStop1 As New GradientStop()
gradientStop1.Offset = 0
gradientStop1.Color = Colors.Red
Dim list As IList = brush.GradientStops
list.Add(gradientStop1)
CHAPTER 2 n XAML 39
Some properties might support more than one type of collection. In this case, you need to
add a tag that specifies the collection class, like this:









nNote If the collection defaults to a null reference (Nothing), you need to include the tag that specifies the
collection class, thereby creating the collection object. If there??™s a default instance of the collection and you
simply need to fill it, you can omit that part.


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