BaseGet Method (String)
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NameObjectCollectionBase.BaseGet Method (String)

Gets the value of the first entry with the specified key from the NameObjectCollectionBase instance.

Namespace:  System.Collections.Specialized
Assembly:  System (in System.dll)

Protected Function BaseGet ( _
	name As String _
) As Object
Dim name As String 
Dim returnValue As Object 

returnValue = Me.BaseGet(name)


Type: System.String

The String key of the entry to get. The key can be Nothing.

Return Value

Type: System.Object
An Object that represents the value of the first entry with the specified key, if found; otherwise, Nothing.

If the collection contains multiple entries with the specified key, this method returns only the first entry. To get the values of subsequent entries with the same key, use the enumerator to iterate through the collection and compare the keys.

Caution noteCaution:

This method returns Nothing in the following cases: 1) if the specified key is not found; and 2) if the specified key is found and its associated value is Nothing. This method does not distinguish between the two cases.

This method is an O(1) operation.

The following code example uses BaseGetKey and BaseGet to get specific keys and values.

Imports System
Imports System.Collections
Imports System.Collections.Specialized

Public Class MyCollection
   Inherits NameObjectCollectionBase

   Private _de As New DictionaryEntry()

   ' Gets a key-and-value pair (DictionaryEntry) using an index.
   Default Public ReadOnly Property Item(index As Integer) As DictionaryEntry
         _de.Key = Me.BaseGetKey(index)
         _de.Value = Me.BaseGet(index)
         Return _de
      End Get 
   End Property 

   ' Gets or sets the value associated with the specified key.
   Default Public Property Item(key As [String]) As [Object]
         Return Me.BaseGet(key)
      End Get 
         Me.BaseSet(key, value)
      End Set 
   End Property 

   ' Adds elements from an IDictionary into the new collection. 
   Public Sub New(d As IDictionary)
      Dim de As DictionaryEntry
      For Each de In  d
         Me.BaseAdd(CType(de.Key, [String]), de.Value)
      Next de
   End Sub 'New 

End Class 'MyCollection

Public Class SamplesNameObjectCollectionBase   

   Public Shared Sub Main()

      ' Creates and initializes a new MyCollection instance. 
      Dim d = New ListDictionary()
      d.Add("red", "apple")
      d.Add("yellow", "banana")
      d.Add("green", "pear")
      Dim myCol As New MyCollection(d)
      Console.WriteLine("Initial state of the collection (Count = {0}):", myCol.Count)

      ' Gets specific keys and values.
      Console.WriteLine("The key at index 0 is {0}.", myCol(0).Key)
      Console.WriteLine("The value at index 0 is {0}.", myCol(0).Value)
      Console.WriteLine("The value associated with the key ""green"" is {0}.", myCol("green"))

   End Sub 'Main

   Public Shared Sub PrintKeysAndValues(myCol As MyCollection)
      Dim i As Integer 
      For i = 0 To myCol.Count - 1
         Console.WriteLine("[{0}] : {1}, {2}", i, myCol(i).Key, myCol(i).Value)
      Next i
   End Sub 'PrintKeysAndValues

End Class 'SamplesNameObjectCollectionBase 

'This code produces the following output. 

'Initial state of the collection (Count = 3): 
'[0] : red, apple 
'[1] : yellow, banana 
'[2] : green, pear 
'The key at index 0 is red. 
'The value at index 0 is apple. 
'The value associated with the key "green" is pear.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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