如何在 VB.net 中的 For Each 期间访问 Collection 键？

发布于 2024-07-30 07:34:53 字数 297 浏览 5 评论 0原文

我有一些这样的代码：

Dim col As Collection = New Collection
col.Add(value1, "key1")
col.Add(value2, "key2")

' later...
For Each item As String In col
    ' want to get valueX and keyX here; currently, "item" holds the value
Next

如何在循环中同时获取值和键？也许还有另一个课程可以让这变得更容易？

原文

I have some code like this:

Dim col As Collection = New Collection
col.Add(value1, "key1")
col.Add(value2, "key2")

' later...
For Each item As String In col
    ' want to get valueX and keyX here; currently, "item" holds the value
Next

How can I get both the value and key within the loop? Maybe there is another class that makes this easier?

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红墙和绿瓦 2024-08-06 07:34:53

我会使用通用词典...

 Imports System.Collections.Generic  'at top of file

    Dim col As New Dictionary(Of String, Of Object) 'or whatever type
    col.Add("key1", value1)
    col.Add("key2", value2)    

    For Each item as KeyValuePair(of String, Object) in col
           Console.WriteLine(item.key & ": " & item.value)
    Next

I'd use a generic dictionary...

 Imports System.Collections.Generic  'at top of file

    Dim col As New Dictionary(Of String, Of Object) 'or whatever type
    col.Add("key1", value1)
    col.Add("key2", value2)    

    For Each item as KeyValuePair(of String, Object) in col
           Console.WriteLine(item.key & ": " & item.value)
    Next

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