是否可以使用String键/值对初始化新的System.Collections.Generic.Dictionary？ [英] Is it possible to initialise a New System.Collections.Generic.Dictionary with String key/value pairs?

问题描述

是否可以创建和初始化 System.Collections.Generic.Dictionary 在一个语句中使用String键/值对的对象

Is it possible to create and initialise a System.Collections.Generic.Dictionary object with String key/value pairs in one statement?

我是沿着一系列Strings的构造函数思考。

I'm thinking along the lines of the constructor for an array of Strings..

例如

Private mStringArray As String() = {"String1", "String2", "etc"}

如果事实证明是句法糖的事情，我会喜欢我可以在.Net 2.0（Visual Studio 2005）和Visual Basic中使用的答案 - 虽然我很好奇，如果这是可能的，所以不要让你失望; o）

In case this is turns out to be a syntactic sugar kind of thing, I'd prefer an answer that I can use in .Net 2.0 (Visual Studio 2005), and Visual Basic - though I'm curious if it's possible at all so don't let that put you off ;o)

推荐答案

我不认为有一种方法可以在VB.NET 2中开箱即用，但是您可以扩展通用字典按你想要的方式工作

I don't think there is a way to do this out of the box in VB.NET 2, however you can extend the generic dictionary to make it work the way you want it to.

下面的控制台应用如下所示：

The console app below illustrates this:

Imports System.Collections.Generic

Module Module1

    Sub Main()

        Dim items As New FancyDictionary(Of Integer, String)(New Object(,) {{1, "First Item"}, {2, "Second Item"}, {3, "Last Item"}})
        Dim enumerator As FancyDictionary(Of Integer, String).Enumerator = items.GetEnumerator

        While enumerator.MoveNext
            Console.WriteLine(String.Format("{0} : {1}", enumerator.Current.Key, enumerator.Current.Value))
        End While

        Console.Read()

    End Sub

    Public Class FancyDictionary(Of TKey, TValue)
        Inherits Dictionary(Of TKey, TValue)

        Public Sub New(ByVal InitialValues(,) As Object)

            For i As Integer = 0 To InitialValues.GetLength(0) - 1

                Me.Add(InitialValues(i, 0), InitialValues(i, 1))

            Next

        End Sub

    End Class

End Module

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