VB.NET HybridDictionary.Keys属性代码示例

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

在下文中一共展示了HybridDictionary.Keys属性的1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: Main

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

Public Class SamplesHybridDictionary   

   Public Shared Sub Main()

      ' Creates and initializes a new HybridDictionary.
      Dim myCol As New HybridDictionary()
      myCol.Add("Braeburn Apples", "1.49")
      myCol.Add("Fuji Apples", "1.29")
      myCol.Add("Gala Apples", "1.49")
      myCol.Add("Golden Delicious Apples", "1.29")
      myCol.Add("Granny Smith Apples", "0.89")
      myCol.Add("Red Delicious Apples", "0.99")
      myCol.Add("Plantain Bananas", "1.49")
      myCol.Add("Yellow Bananas", "0.79")
      myCol.Add("Strawberries", "3.33")
      myCol.Add("Cranberries", "5.98")
      myCol.Add("Navel Oranges", "1.29")
      myCol.Add("Grapes", "1.99")
      myCol.Add("Honeydew Melon", "0.59")
      myCol.Add("Seedless Watermelon", "0.49")
      myCol.Add("Pineapple", "1.49")
      myCol.Add("Nectarine", "1.99")
      myCol.Add("Plums", "1.69")
      myCol.Add("Peaches", "1.99")

      ' Display the contents of the collection using For Each. This is the preferred method.
      Console.WriteLine("Displays the elements using For Each:")
      PrintKeysAndValues1(myCol)

      ' Display the contents of the collection using the enumerator.
      Console.WriteLine("Displays the elements using the IDictionaryEnumerator:")
      PrintKeysAndValues2(myCol)

      ' Display the contents of the collection using the Keys, Values, Count, and Item properties.
      Console.WriteLine("Displays the elements using the Keys, Values, Count, and Item properties:")
      PrintKeysAndValues3(myCol)

   End Sub


   ' Uses the For Each statement which hides the complexity of the enumerator.
   ' NOTE: The For Each statement is the preferred way of enumerating the contents of a collection.
   Public Shared Sub PrintKeysAndValues1(myCol As IDictionary)

      Console.WriteLine("   KEY                       VALUE")
      Dim de As DictionaryEntry
      For Each de In  myCol
         Console.WriteLine("   {0,-25} {1}", de.Key, de.Value)
      Next de
      Console.WriteLine()

   End Sub


   ' Uses the enumerator. 
   ' NOTE: The For Each statement is the preferred way of enumerating the contents of a collection.
   Public Shared Sub PrintKeysAndValues2(myCol As IDictionary)
      Dim myEnumerator As IDictionaryEnumerator = myCol.GetEnumerator()

      Console.WriteLine("   KEY                       VALUE")
      While myEnumerator.MoveNext()
         Console.WriteLine("   {0,-25} {1}", myEnumerator.Key, myEnumerator.Value)
      End While
      Console.WriteLine()

   End Sub


   ' Uses the Keys, Values, Count, and Item properties.
   Public Shared Sub PrintKeysAndValues3(myCol As HybridDictionary)
      Dim myKeys(myCol.Count) As [String]
      myCol.Keys.CopyTo(myKeys, 0)

      Console.WriteLine("   INDEX KEY                       VALUE")
      Dim i As Integer
      For i = 0 To myCol.Count - 1
         Console.WriteLine("   {0,-5} {1,-25} {2}", i, myKeys(i), myCol(myKeys(i)))
      Next i
      Console.WriteLine()

   End Sub

End Class

开发者ID:VB.NET开发者，项目名称:System.Collections.Specialized，代码行数:87，代码来源:HybridDictionary.Keys

输出：

Displays the elements using For Each:
KEY                       VALUE
Seedless Watermelon       0.49
Nectarine                 1.99
Cranberries               5.98
Plantain Bananas          1.49
Honeydew Melon            0.59
Pineapple                 1.49
Strawberries              3.33
Grapes                    1.99
Braeburn Apples           1.49
Peaches                   1.99
Red Delicious Apples      0.99
Golden Delicious Apples   1.29
Yellow Bananas            0.79
Granny Smith Apples       0.89
Gala Apples               1.49
Plums                     1.69
Navel Oranges             1.29
Fuji Apples               1.29

Displays the elements using the IDictionaryEnumerator:
KEY                       VALUE
Seedless Watermelon       0.49
Nectarine                 1.99
Cranberries               5.98
Plantain Bananas          1.49
Honeydew Melon            0.59
Pineapple                 1.49
Strawberries              3.33
Grapes                    1.99
Braeburn Apples           1.49
Peaches                   1.99
Red Delicious Apples      0.99
Golden Delicious Apples   1.29
Yellow Bananas            0.79
Granny Smith Apples       0.89
Gala Apples               1.49
Plums                     1.69
Navel Oranges             1.29
Fuji Apples               1.29

Displays the elements using the Keys, Values, Count, and Item properties:
INDEX KEY                       VALUE
0     Seedless Watermelon       0.49
1     Nectarine                 1.99
2     Cranberries               5.98
3     Plantain Bananas          1.49
4     Honeydew Melon            0.59
5     Pineapple                 1.49
6     Strawberries              3.33
7     Grapes                    1.99
8     Braeburn Apples           1.49
9     Peaches                   1.99
10    Red Delicious Apples      0.99
11    Golden Delicious Apples   1.29
12    Yellow Bananas            0.79
13    Granny Smith Apples       0.89
14    Gala Apples               1.49
15    Plums                     1.69
16    Navel Oranges             1.29
17    Fuji Apples               1.29

注：本文中的System.Collections.Specialized.HybridDictionary.Keys属性示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。