vb.net 在声明时将键/值添加到字典
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Add keys/values to Dictionary at declaration
提问by XstreamINsanity
Very easy today, I think. In C#, its:
今天很轻松，我想。在 C# 中，它的：
Dictionary<String, String> dict = new Dictionary<string, string>() { { "", "" } };
But in vb, the following doesn't work.
但在 vb 中，以下不起作用。
Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) (("",""))
I'm pretty sure there's a way to add them at declaration, but I'm not sure how. And yes, I want to add them at declaration, not any other time. :) So hopefully it's possible. Thanks everyone.
我很确定有一种方法可以在声明时添加它们，但我不确定如何。是的，我想在声明时添加它们，而不是任何其他时间。:) 所以希望这是可能的。谢谢大家。
I've also tried:
我也试过：
Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) ({"",""})
And...
和...
Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) {("","")}
And...
和...
Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) {{"",""}}
回答by Darin Dimitrov
This is possible in VB.NET 10:
这在 VB.NET 10 中是可能的：
Dim dict = New Dictionary(Of Integer, String) From {{ 1, "Test1" }, { 2, "Test1" }}
Unfortunately IIRC VS 2008 uses VB.NET 9 compiler which doesn't support this syntax.
不幸的是 IIRC VS 2008 使用不支持这种语法的 VB.NET 9 编译器。
And for those that might be interested here's what happens behind the scenes (C#):
对于那些可能感兴趣的人，这里是幕后发生的事情 (C#)：
Dictionary<int, string> VB$t_ref$S0 = new Dictionary<int, string>();
VB$t_ref$S0.Add(1, "Test1");
VB$t_ref$S0.Add(2, "Test1");
Dictionary<int, string> dict = VB$t_ref$S0;
回答by Hans Passant
It is much the same, use the From keyword:
大致相同，使用 From 关键字：
Dim d As New Dictionary(Of String, String) From {{"", ""}}
However, this requires version 10 of the language, available in VS2010.
但是，这需要 VS2010 中可用的语言版本 10。
回答by Mike
Here's a cool translation: You can also have a Generic Dictionary of strings and string array.
这是一个很酷的翻译：您还可以拥有一个字符串和字符串数组的通用字典。
C#:
C#：
private static readonly Dictionary<string, string[]> dics = new Dictionary<string, string[]>
{
{"sizes", new string[] {"small", "medium", "large"}},
{"colors", new string[] {"black", "red", "brown"}},
{"shapes", new string[] {"circle", "square"}}
};
VB:
VB：
Private Shared ReadOnly dics As New Dictionary(Of String, String()) From { _
{"sizes", New String() {"small", "medium", "large"}}, _
{"colors", New String() {"black", "red", "brown"}}, _
{"shapes", New String() {"circle", "square"}}}
Cool haa :)
酷哈哈:)
回答by vulkanino
There's no constructor to take a KeyValuePair for a dictionary.
没有构造函数可以为字典采用 KeyValuePair。
