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Given a non-generic IEnumerable interface, wrap a generic IEnumerable<T>
interface around it. The generic interface will enumerate the same objects as the
underlying non-generic collection, but can be used in places that require a generic interface.
The underlying non-generic collection must contain only items that
are of type T or a type derived from it. This method is useful
when interfacing older, non-generic collections to newer code that uses generic interfaces.
Namespace: Wintellect.PowerCollections
Assembly:
PowerCollections (in PowerCollections.dll)
Syntax
| C# |
|---|
public static IEnumerable<T> TypedAs<T>( IEnumerable untypedCollection ) |
| Visual Basic (Declaration) |
|---|
Public Shared Function TypedAs(Of T) ( _ untypedCollection As IEnumerable _ ) As IEnumerable(Of T) |
| Visual C++ |
|---|
public: generic<typename T> static IEnumerable<T>^ TypedAs ( IEnumerable^ untypedCollection ) |
Parameters
- untypedCollection
- IEnumerable
An untyped collection. This collection should only contain items of type T or a type derived from it.
Return Value
A generic IEnumerable<T> wrapper around untypedCollection. If untypedCollection is null, then null is returned.Type Parameters
- T
- The item type of the wrapper collection.
Remarks
Some collections implement both generic and non-generic interfaces. For efficiency,
this method will first attempt to cast untypedCollection to IEnumerable<T>.
If that succeeds, it is returned; otherwise, a wrapper object is created.
See Also
Algorithms Class
Wintellect.PowerCollections Namespace
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