将字典转换为结构化格式的字符串 [英] Convert Dictionary into structured format string

问题描述

我有一个Dictionary对象声明为 var作为Dictionary（of String，String）。

I have a Dictionary object declared as var as Dictionary(of String, String).

我是试图利用可用于Generic Collection的LINQ扩展，但只得到了非扩展方法。

I am trying to utilize the LINQ extensions available to the Generic Collection but am only getting the non-extension methods.

我需要将Dictionary集合转换为具有以下模式的字符串： key1 = val1，key2 = val2，...，keyn = valn

I need to turn the Dictionary collection into a string with the following pattern: key1=val1, key2=val2, ..., keyn=valn

首先要做的是foreach

Thought at first doing a foreach loop would hit the spot except the fact that i am programmers-block.

到目前为止，我仍然了解循环，但是怀疑它是产生这种情况的最佳逻辑模式。

What i have so far, but doubt its the best logic pattern for producing this:

Public Overrides Function ToString() As String
    Dim ret As String = ""
    For Each kv As KeyValuePair(Of String, String) In Me._set
        If ret <> String.Empty Then
            ret &= ", "
        End If

        ret &= String.Format("{0}={1}", kv.Key, kv.Value)
    Next

    Return ret
End Function

由于某种原因，即使我已经导入了 System.Core & System.Linq 库放入项目后，我的dev-env intellisense中没有显示扩展的LINQ扩展。因此，到目前为止，除非有人可以帮助我使LINQ扩展出现在Intellisense中，否则它们就不可能了。

And for some reason even though i have imported the System.Core & System.Linq libraries into the project none of the extended LINQ extensions are showing up in my dev-env intellisense. So for now, unless someone could help me get the LINQ extensions to show up in Intellisense, they are out of the question.

发现了LINQ扩展没有显示出来，所以它们又回到了桌面上；）

Found the problem with the LINQ extensions not showing up, so they are back on the table ;)

推荐答案

我会用Linq编写整个方法块像这样（对不起C＃-vb.net汤...）

I would have written the whole method block with Linq like this (sorry for the C#-vb.net soup...)

return String.Join(",",Me._set.Select(kvp=>String.Format("{0}={1}",kvp.Key, kvp.Value).ToArray());

此外，我真的不知道set是什么，也许你会必须强制转换：

Also, I don't really know what _set is. Maybe you'll have to cast :

return String.Join(",", Me._set.Cast<KeyValuePair<String,String>>().Select(kvp=>String.Format("{0}={1}",kvp.Key, kvp.Value).ToArray());

vb.net：

vb.net:

return String.Join(", ", Me.Select(Function(kvp) String.Format("{0}={1}", kvp.Key, kvp.Value)).ToArray())

希望这会有所帮助，

这篇关于将字典转换为结构化格式的字符串的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！