VB.NET NameValueCollection类代码示例

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本文整理汇总了VB.NET中System.Collections.Specialized.NameValueCollection类的典型用法代码示例。如果您正苦于以下问题：VB.NET NameValueCollection类的具体用法？VB.NET NameValueCollection怎么用？VB.NET NameValueCollection使用的例子？那么恭喜您, 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NameValueCollection类的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: SamplesNameValueCollection

' The following code example demonstrates several of the properties and methods of ListDictionary.

Imports System.Collections
Imports System.Collections.Specialized


Public Class SamplesNameValueCollection

    Public Shared Sub Main()

        ' Creates and initializes a new NameValueCollection.
        Dim myCol As New NameValueCollection()
        myCol.Add("red", "rojo")
        myCol.Add("green", "verde")
        myCol.Add("blue", "azul")
        myCol.Add("red", "rouge")

        ' Displays the values in the NameValueCollection in two different ways.
        Console.WriteLine("Displays the elements using the AllKeys property and the Item (indexer) property:")
        PrintKeysAndValues(myCol)
        Console.WriteLine("Displays the elements using GetKey and Get:")
        PrintKeysAndValues2(myCol)

        ' Gets a value either by index or by key.
        Console.WriteLine("Index 1 contains the value {0}.", myCol(1))
        Console.WriteLine("Key ""red"" has the value {0}.", myCol("red"))
        Console.WriteLine()

        ' Copies the values to a string array and displays the string array.
        Dim myStrArr(myCol.Count) As String
        myCol.CopyTo(myStrArr, 0)
        Console.WriteLine("The string array contains:")
        Dim s As String
        For Each s In myStrArr
            Console.WriteLine("   {0}", s)
        Next s
        Console.WriteLine()

        ' Searches for a key and deletes it.
        myCol.Remove("green")
        Console.WriteLine("The collection contains the following elements after removing ""green"":")
        PrintKeysAndValues(myCol)

        ' Clears the entire collection.
        myCol.Clear()
        Console.WriteLine("The collection contains the following elements after it is cleared:")
        PrintKeysAndValues(myCol)

    End Sub

    Public Shared Sub PrintKeysAndValues(myCol As NameValueCollection)
        Console.WriteLine("   KEY        VALUE")
        Dim s As String
        For Each s In  myCol.AllKeys
            Console.WriteLine("   {0,-10} {1}", s, myCol(s))
        Next s
        Console.WriteLine()
    End Sub

    Public Shared Sub PrintKeysAndValues2(myCol As NameValueCollection)
        Console.WriteLine("   [INDEX] KEY        VALUE")
        Dim i As Integer
        For i = 0 To myCol.Count - 1
            Console.WriteLine("   [{0}]     {1,-10} {2}", i, myCol.GetKey(i), myCol.Get(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:69，代码来源:NameValueCollection

输出：

Displays the elements using the AllKeys property and the Item (indexer) property:
KEY        VALUE
red        rojo,rouge
green      verde
blue       azul

Displays the elements using GetKey and Get:
[INDEX] KEY        VALUE
[0]     red        rojo,rouge
[1]     green      verde
[2]     blue       azul

Index 1 contains the value verde.
Key "red" has the value rojo,rouge.

The string array contains:
red
green
blue


The collection contains the following elements after removing "green":
KEY        VALUE
red        rojo,rouge
blue       azul

The collection contains the following elements after it is cleared:
KEY        VALUE

注：本文中的System.Collections.Specialized.NameValueCollection类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。