NameObjectCollectionBase.KeysCollection Class (System.Collections.Specialized)

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.NET Framework Class Library
NameObjectCollectionBase.KeysCollection Class

Represents a collection of the String keys of a collection.

Inheritance Hierarchy
System.Object
  System.Collections.Specialized.NameObjectCollectionBase.KeysCollection

Namespace:  System.Collections.Specialized
Assembly:  System (in System.dll)
Syntax
Visual Basic
<SerializableAttribute> _
Public Class KeysCollection _
	Implements ICollection, IEnumerable
C#
[SerializableAttribute]
public class KeysCollection : ICollection, 
	IEnumerable
Visual C++
[SerializableAttribute]
public ref class KeysCollection : ICollection, 
	IEnumerable
F#
[<SerializableAttribute>]
type KeysCollection =  
    class
        interface ICollection
        interface IEnumerable
    end

The NameObjectCollectionBase.KeysCollection type exposes the following members.

Properties
  Name Description
Public property Supported by the XNA Framework Count Gets the number of keys in the NameObjectCollectionBase.KeysCollection.
Public property Supported by the XNA Framework Item Gets the entry at the specified index of the collection.
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Methods
  Name Description
Public method Supported by the XNA Framework Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Supported by the XNA Framework Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method Supported by the XNA Framework Get Gets the key at the specified index of the collection.
Public method Supported by the XNA Framework GetEnumerator Returns an enumerator that iterates through the NameObjectCollectionBase.KeysCollection.
Public method Supported by the XNA Framework GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method Supported by the XNA Framework GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method Supported by the XNA Framework MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method Supported by the XNA Framework ToString Returns a string that represents the current object. (Inherited from Object.)
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Extension Methods
  Name Description
Public Extension Method AsParallel Enables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension Method AsQueryable Converts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension Method Supported by the XNA Framework Cast<TResult> Converts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension Method Supported by the XNA Framework OfType<TResult> Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)
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Explicit Interface Implementations
  Name Description
Explicit interface implemetation Private method Supported by the XNA Framework ICollection.CopyTo Copies the entire NameObjectCollectionBase.KeysCollection to a compatible one-dimensional Array, starting at the specified index of the target array.
Explicit interface implemetation Private property Supported by the XNA Framework ICollection.IsSynchronized Gets a value indicating whether access to the NameObjectCollectionBase.KeysCollection is synchronized (thread safe).
Explicit interface implemetation Private property Supported by the XNA Framework ICollection.SyncRoot Gets an object that can be used to synchronize access to the NameObjectCollectionBase.KeysCollection.
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Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Thread Safety

Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

This implementation does not provide a synchronized (thread safe) wrapper for a NameObjectCollectionBase.KeysCollection, but derived classes can create their own synchronized versions of the NameObjectCollectionBase.KeysCollection using the SyncRoot property.

Enumerating through a collection is intrinsically not a thread-safe procedure. Even when a collection is synchronized, other threads can still modify the collection, which causes the enumerator to throw an exception. To guarantee thread safety during enumeration, you can either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.

See Also

Reference

System.Collections.Specialized Namespace