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Lookup(Of TKey, TElement).GetEnumerator Method

Returns a generic enumerator that iterates through the Lookup(Of TKey, TElement).

Namespace:  System.Linq
Assemblies:   System.Core (in System.Core.dll)
  System.Linq (in System.Linq.dll)

'Declaration
Public Function GetEnumerator As IEnumerator(Of IGrouping(Of TKey, TElement))

Implements

IEnumerable(Of T).GetEnumerator

The following example demonstrates how to use GetEnumerator to iterate through the keys and values of a Lookup(Of TKey, TElement). This code example is part of a larger example provided for the Lookup(Of TKey, TElement) class.

Dim output As New System.Text.StringBuilder
' Iterate through each IGrouping in the Lookup and output the contents. 
For Each packageGroup As IGrouping(Of Char, String) In lookup
    ' Print the key value of the IGrouping.
    output.AppendLine(packageGroup.Key)
    ' Iterate through each value in the IGrouping and print its value. 
    For Each str As String In packageGroup
        output.AppendLine(String.Format("    {0}", str))
    Next 
Next 

' Display the output.
MsgBox(output.ToString())

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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