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NameObjectCollectionBase.BaseSet Method (Int32, Object)
Visual Studio 2010
Sets the value of the entry at the specified index of the NameObjectCollectionBase instance.
Assembly: System (in System.dll)
Parameters
- index
- Type: System.Int32
The zero-based index of the entry to set.
- value
- Type: System.Object
The Object that represents the new value of the entry to set. The value can be Nothing.
| Exception | Condition |
|---|---|
| NotSupportedException | The collection is read-only. |
| ArgumentOutOfRangeException | index is outside the valid range of indexes for the collection. |
The following code example uses BaseSet to set the value of a specific element.
Imports System Imports System.Collections Imports System.Collections.Specialized Public Class MyCollection Inherits NameObjectCollectionBase ' Gets or sets the value at the specified index. Default Public Property Item(index As Integer) As [Object] Get Return Me.BaseGet(index) End Get Set Me.BaseSet(index, value) End Set End Property ' Gets or sets the value associated with the specified key. Default Public Property Item(key As [String]) As [Object] Get Return Me.BaseGet(key) End Get Set Me.BaseSet(key, value) End Set End Property ' Gets a String array that contains all the keys in the collection. Public ReadOnly Property AllKeys() As [String]() Get Return Me.BaseGetAllKeys() End Get 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:") PrintKeysAndValues2(myCol) Console.WriteLine() ' Sets the value at index 1. myCol(1) = "sunflower" Console.WriteLine("After setting the value at index 1:") PrintKeysAndValues2(myCol) Console.WriteLine() ' Sets the value associated with the key "red". myCol("red") = "tulip" Console.WriteLine("After setting the value associated with the key ""red"":") PrintKeysAndValues2(myCol) End Sub 'Main Public Shared Sub PrintKeysAndValues2(myCol As MyCollection) Dim s As [String] For Each s In myCol.AllKeys Console.WriteLine("{0}, {1}", s, myCol(s)) Next s End Sub 'PrintKeysAndValues2 End Class 'SamplesNameObjectCollectionBase 'This code produces the following output. ' 'Initial state of the collection: 'red, apple 'yellow, banana 'green, pear ' 'After setting the value at index 1: 'red, apple 'yellow, sunflower 'green, pear ' 'After setting the value associated with the key "red": 'red, tulip 'yellow, sunflower 'green, pear
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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