本文整理匯總了VB.NET中System.Collections.Specialized.NameObjectCollectionBase.IsReadOnly屬性的典型用法代碼示例。如果您正苦於以下問題：VB.NET NameObjectCollectionBase.IsReadOnly屬性的具體用法？VB.NET NameObjectCollectionBase.IsReadOnly怎麽用？VB.NET NameObjectCollectionBase.IsReadOnly使用的例子？那麽, 這裏精選的屬性代碼示例或許可以為您提供幫助。您也可以進一步了解該屬性所在類System.Collections.Specialized.NameObjectCollectionBase的用法示例。
在下文中一共展示了NameObjectCollectionBase.IsReadOnly屬性的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: MyCollection
' 導入命名空間
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
Get
_de.Key = Me.BaseGetKey(index)
_de.Value = Me.BaseGet(index)
Return _de
End Get
End Property
' Adds elements from an IDictionary into the new collection.
Public Sub New(d As IDictionary, bReadOnly As [Boolean])
Dim de As DictionaryEntry
For Each de In d
Me.BaseAdd(CType(de.Key, [String]), de.Value)
Next de
Me.IsReadOnly = bReadOnly
End Sub
' Adds an entry to the collection.
Public Sub Add(key As [String], value As [Object])
Me.BaseAdd(key, value)
End Sub
End Class
Public Class SamplesNameObjectCollectionBase
Public Shared Sub Main()
' Creates and initializes a new MyCollection that is read-only.
Dim d = New ListDictionary()
d.Add("red", "apple")
d.Add("yellow", "banana")
d.Add("green", "pear")
Dim myROCol As New MyCollection(d, True)
' Tries to add a new item.
Try
myROCol.Add("blue", "sky")
Catch e As NotSupportedException
Console.WriteLine(e.ToString())
End Try
' Displays the keys and values of the MyCollection.
Console.WriteLine("Read-Only Collection:")
PrintKeysAndValues(myROCol)
End Sub
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
End Class開發者ID:VB.NET開發者，項目名稱:System.Collections.Specialized，代碼行數:67，代碼來源:NameObjectCollectionBase.IsReadOnly
輸出：
System.NotSupportedException: Collection is read-only. at System.Collections.Specialized.NameObjectCollectionBase.BaseAdd(String name, Object value) at SamplesNameObjectCollectionBase.Main() Read-Only Collection: [0] : red, apple [1] : yellow, banana [2] : green, pear