C# One-liner 创建一个包含一个条目的字典
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One-liner to create a dictionary with one entry
提问by Michael Sandler
I have a method which takes a Dictionary<int, int>as a parameter
我有一个将 aDictionary<int, int>作为参数的方法
public void CoolStuff(Dictionary<int, int> job)
I want to call that method with one dictionary entry, such as
我想用一个字典条目调用该方法，例如
int a = 5;
int b = 6;
var param = new Dictionary<int, int>();
param.Add(a, b);
CoolStuff(param);
How can I do it in one line?
我怎样才能在一行中做到这一点？
采纳答案by horgh
This is it, if you do not need the aand bvariables:
就是这样，如果您不需要a和b变量：
var param = new Dictionary<int, int> { { 5, 6 } };
or even
甚至
CoolStuff(new Dictionary<int, int> { { 5, 6 } });
Please, read How to: Initialize a Dictionary with a Collection Initializer (C# Programming Guide)
回答by Sergey Berezovskiy
var param = new Dictionary<int, int>() { { 5, 6 } };
