本文整理汇总了VB.NET中System.Collections.Specialized.OrderedDictionary类的典型用法代码示例。如果您正苦于以下问题:VB.NET OrderedDictionary类的具体用法?VB.NET OrderedDictionary怎么用?VB.NET OrderedDictionary使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了OrderedDictionary类的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: OrderedDictionarySample
' The following code example enumerates the elements of a OrderedDictionary.
Imports System.Collections
Imports System.Collections.Specialized
Public Class OrderedDictionarySample
Public Shared Sub Main()
' Creates and initializes a OrderedDictionary.
Dim myOrderedDictionary As New OrderedDictionary()
myOrderedDictionary.Add("testKey1", "testValue1")
myOrderedDictionary.Add("testKey2", "testValue2")
myOrderedDictionary.Add("keyToDelete", "valueToDelete")
myOrderedDictionary.Add("testKey3", "testValue3")
Dim keyCollection As ICollection = myOrderedDictionary.Keys
Dim valueCollection As ICollection = myOrderedDictionary.Values
' Display the contents Imports the key and value collections
DisplayContents( _
keyCollection, valueCollection, myOrderedDictionary.Count)
' Modifying the OrderedDictionary
If Not myOrderedDictionary.IsReadOnly Then
' Insert a new key to the beginning of the OrderedDictionary
myOrderedDictionary.Insert(0, "insertedKey1", "insertedValue1")
' Modify the value of the entry with the key "testKey2"
myOrderedDictionary("testKey2") = "modifiedValue"
' Remove the last entry from the OrderedDictionary: "testKey3"
myOrderedDictionary.RemoveAt(myOrderedDictionary.Count - 1)
' Remove the "keyToDelete" entry, if it exists
If (myOrderedDictionary.Contains("keyToDelete")) Then
myOrderedDictionary.Remove("keyToDelete")
End If
End If
Console.WriteLine( _
"{0}Displaying the entries of a modified OrderedDictionary.", _
Environment.NewLine)
DisplayContents( _
keyCollection, valueCollection, myOrderedDictionary.Count)
' Clear the OrderedDictionary and add new values
myOrderedDictionary.Clear()
myOrderedDictionary.Add("newKey1", "newValue1")
myOrderedDictionary.Add("newKey2", "newValue2")
myOrderedDictionary.Add("newKey3", "newValue3")
' Display the contents of the "new" Dictionary Imports an enumerator
Dim myEnumerator As IDictionaryEnumerator = _
myOrderedDictionary.GetEnumerator()
Console.WriteLine( _
"{0}Displaying the entries of a 'new' OrderedDictionary.", _
Environment.NewLine)
DisplayEnumerator(myEnumerator)
Console.ReadLine()
End Sub
' Displays the contents of the OrderedDictionary from its keys and values
Public Shared Sub DisplayContents( _
ByVal keyCollection As ICollection, _
ByVal valueCollection As ICollection, ByVal dictionarySize As Integer)
Dim myKeys(dictionarySize) As [String]
Dim myValues(dictionarySize) As [String]
keyCollection.CopyTo(myKeys, 0)
valueCollection.CopyTo(myValues, 0)
' Displays the contents of the OrderedDictionary
Console.WriteLine(" INDEX KEY VALUE")
Dim i As Integer
For i = 0 To dictionarySize - 1
Console.WriteLine(" {0,-5} {1,-25} {2}", _
i, myKeys(i), myValues(i))
Next i
Console.WriteLine()
End Sub
' Displays the contents of the OrderedDictionary using its enumerator
Public Shared Sub DisplayEnumerator( _
ByVal myEnumerator As IDictionaryEnumerator)
Console.WriteLine(" KEY VALUE")
While myEnumerator.MoveNext()
Console.WriteLine(" {0,-25} {1}", _
myEnumerator.Key, myEnumerator.Value)
End While
End Sub
End Class
输出:
INDEX KEY VALUE 0: testKey1(testValue1) 1: testKey2(testValue2) 2: keyToDelete(valueToDelete) 3: testKey3(testValue3) Displaying the entries of a modified OrderedDictionary. INDEX KEY VALUE 0: insertedKey1(insertedValue1) 1: testKey1(testValue1) 2: testKey2(modifiedValue) Displaying the entries of a "new" OrderedDictionary. KEY(VALUE) newKey1(newValue1) newKey2(newValue2) newKey3(newValue3)
示例2:
For Each de As DictionaryEntry In myOrderedDictionary
'...
Next de