VB.NET Hashtable.GetEnumerator方法代码示例

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本文整理汇总了VB.NET中System.Collections.Hashtable.GetEnumerator方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Hashtable.GetEnumerator方法的具体用法？VB.NET Hashtable.GetEnumerator怎么用？VB.NET Hashtable.GetEnumerator使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Collections.Hashtable的用法示例。

在下文中一共展示了Hashtable.GetEnumerator方法的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，您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。

示例1: HashtableExample

' 导入命名空间
Imports System.Collections

Public Class HashtableExample
    Public Shared Sub Main()
        ' Creates and initializes a new Hashtable.
        Dim clouds As New Hashtable()
        clouds.Add("Cirrus", "Castellanus")
        clouds.Add("Cirrocumulus", "Stratiformis")
        clouds.Add("Altostratus", "Radiatus")
        clouds.Add("Stratocumulus", "Perlucidus")
        clouds.Add("Stratus", "Fractus")
        clouds.Add("Nimbostratus", "Pannus")
        clouds.Add("Cumulus", "Humilis")
        clouds.Add("Cumulonimbus", "Incus")

        ' Displays the keys and values of the Hashtable using GetEnumerator()

        Dim denum As IDictionaryEnumerator = clouds.GetEnumerator()
        Dim dentry As DictionaryEntry

        Console.WriteLine()
        Console.WriteLine("    Cloud Type       Variation")
        Console.WriteLine("    -----------------------------")
        While denum.MoveNext()
            dentry = CType(denum.Current, DictionaryEntry)
            Console.WriteLine("    {0,-17}{1}", dentry.Key, dentry.Value)
        End While
        Console.WriteLine()

        ' Displays the keys and values of the Hashtable using foreach statement

        Console.WriteLine("    Cloud Type       Variation")
        Console.WriteLine("    -----------------------------")
        For Each de As DictionaryEntry in clouds
            Console.WriteLine("    {0,-17}{1}", de.Key, de.Value)
        Next de
        Console.WriteLine()
    End Sub
End Class

' The program displays the following output to the console:
'
'    Cloud Type       Variation
'    -----------------------------
'    Cirrocumulus     Stratiformis
'    Stratocumulus    Perlucidus
'    Cirrus           Castellanus
'    Cumulus          Humilis
'    Nimbostratus     Pannus
'    Stratus          Fractus
'    Altostratus      Radiatus
'    Cumulonimbus     Incus
'
'    Cloud Type       Variation
'    -----------------------------
'    Cirrocumulus     Stratiformis
'    Stratocumulus    Perlucidus
'    Cirrus           Castellanus
'    Cumulus          Humilis
'    Nimbostratus     Pannus
'    Stratus          Fractus
'    Altostratus      Radiatus
'    Cumulonimbus     Incus*/

开发者ID:VB.NET开发者，项目名称:System.Collections，代码行数:64，代码来源:Hashtable.GetEnumerator

示例2: Hashtable.GetEnumerator()

' 导入命名空间
Imports System
Imports System.Collections

Public Class MainClass

   Public Shared Sub Main()

      Dim table As Hashtable = New Hashtable() 
   
      Dim employee As New Employee("First Name", "Last Name")

      Try
         table.Add("Last Name", employee)
         Console.WriteLine("Put: " & employee.ToString())

      Catch argumentException As ArgumentException
         Console.WriteLine(argumentException.ToString())
      End Try

      Dim result As Object = table("Last Name")

      If Not result Is Nothing Then
         Console.WriteLine("Get: " & result.ToString())
      Else
         Console.WriteLine("Get: " & "Last Name" & " not in table")
      End If


      table.Remove("Last Name")

      Console.WriteLine("table count: " & table.Count)

      Console.WriteLine("Contains key: " & table.ContainsKey("Last Name"))
      table.Clear()

      Dim enumerator As IDictionaryEnumerator = table.GetEnumerator()

      While enumerator.MoveNext()
         Console.WriteLine(Convert.ToString(enumerator.Value))
      End While


      enumerator = table.GetEnumerator()

      While enumerator.MoveNext()
         Console.WriteLine(enumerator.Key )
      End While

   End Sub

End Class



Public Class Employee
   Private firstName, lastName As String

   Public Sub New(ByVal first As String, ByVal last As String)
      firstName = first
      lastName = last
   End Sub 

   Public Overrides Function ToString() As String
      Return firstName & " " & lastName
   End Function 

End Class

开发者ID:VB程序员，项目名称:System.Collections，代码行数:68，代码来源:Hashtable.GetEnumerator

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