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HttpListenerPrefixCollection.GetEnumerator Method

Returns an object that can be used to iterate through the collection.

Namespace:  System.Net
Assembly:  System (in System.dll)

Public Function GetEnumerator As IEnumerator(Of String)

Return Value

Type: System.Collections.Generic.IEnumerator(Of String)
An object that implements the IEnumerator interface and provides access to the strings in this collection.


IEnumerable(Of T).GetEnumerator

The object that is returned by this method is initially positioned before the first element in this collection. You must call the MoveNext method before you can access the first element. To access the element at the current position, call the Current property.

Do not modify the collection while using the enumerator. If the collection is modified while an enumerator is in use, an attempt to set the position by calling MoveNext or Reset causes an InvalidOperationException.

For a detailed description of enumerators, see the documentation for the IEnumerator class and the GetEnumerator method.

The following code example demonstrates enumerating through a collection. Note that the Visual Basic and C# examples use language specific statements to enumerate through the collection instead of retrieving the enumerator.

Public Shared Sub DisplayPrefixesAndState(ByVal listener As HttpListener)
    ' List the prefixes to which the server listens.
    Dim prefixes As HttpListenerPrefixCollection = listener.Prefixes
    If prefixes.Count = 0 Then
        Console.WriteLine("There are no prefixes.")
    End If
    For Each prefix As String In prefixes
    Next prefix
    ' Show the listening state.
    If listener.IsListening Then
        Console.WriteLine("The server is listening.")
    End If
End Sub

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

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