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IXRCollection<In_T, Out_T> (Windows Embedded CE 6.0)

1/6/2010

This template class provides the base class for a generic collection of items.

Syntax

template <typename In_T, typename Out_T>
class IXRCollection :  public IXRDependencyObject

Methods

Method Description

IXRCollection<In_T, Out_T>::Add

Adds an item to the end of this collection and retrieves the index of where it was added.

IXRCollection<In_T, Out_T>::Clear

Removes all items from this collection.

IXRCollection<In_T, Out_T>::Contains

Determines whether an item is in this collection.

IXRCollection<In_T, Out_T>::GetCount

Retrieves the number of items in this collection.

IXRCollection<In_T, Out_T>::GetItem

Retrieves the item at the specified index in this collection.

IXRCollection<In_T, Out_T>::IndexOf

Searches for the specified item and retrieves the zero-based index of its first occurrence within this collection.

IXRCollection<In_T, Out_T>::Insert

Inserts an item into this collection at the location that has the specified index value.

IXRCollection<In_T, Out_T>::Remove

Removes the first occurrence of a specific item from this collection.

IXRCollection<In_T, Out_T>::RemoveAt

Removes the item at the specified index from this collection.

Type Parameters

  • In_T
    Type constraint for type safety of input parameters in the constrained collection implementation.
  • Out_T
    Type constraint for type safety of output parameters in the constrained collection implementation.

Remarks

This base class is used by Silverlight to provide derived collection classes for all kinds of items, including the following:

  • Collections of dependency objects
  • Collections of UI elements
  • Collections of row definitions and column definitions
  • Collections of dynamic transform animations

Each derived collection class provides the same set of inherited methods that are defined in IXRCollection. However, the parameters for input and output are part of a template and can change their type depending on the kind of items contained in each constructed collection. Therefore, while each derived method is essentially the same in each derived class, the defined type for the parameters in each method is flexible and depends on the collection type. This flexible parameter type is expressed in method definitions by using the notation In_T and Out_T.

Items in this collection can be accessed by using an integer index. Indexes in this collection are zero-based.

Note

This base class is provided to make it easier for implementers to create a custom collection. Implementers are encouraged to extend this base class instead of creating their own collection class. This is because this base class provides functionality that is tailored to objects that are stored in the visual tree. In addition, you can derive your own collection type from any of the constructed collection types in Silverlight.

Inheritance Hierarchy

IXRDependencyObject

    IXRCollection

        IXRColorKeyFrameCollection

        IXRColumnDefinitionCollection

**** IXRDoubleCollection

        IXRDoubleKeyFrameCollection

        IXRItemCollection

        IXRGeometryCollection

        IXRGradientStopCollection

        IXRInlineCollection

        IXRObjectKeyFrameCollection

        IXRPathFigureCollection

        IXRPathSegmentCollection

        IXRPointCollection

        IXRPointKeyFrameCollection

        IXRResourceDictionary

        IXRRowDefinitionCollection

        IXRSetterBaseCollection

        IXRStrokeCollection

        IXRStylusPointCollection

**** IXRTimelineCollection

        IXRTransformCollection

        IXRTriggerActionCollection

        IXRTriggerCollection

        IXRUIElementCollection

.NET Framework Equivalent

System.Windows.PresentationFrameworkCollection(T)

Requirements

Header XamlRuntime.h
sysgen SYSGEN_XAML_RUNTIME
Windows Embedded CE Windows Embedded CE 6.0 R3

See Also

Reference

Classes for Collection Management