什么C＃构造映射到PHP数组？

Question

I will just list out some arrays and ask how to do them in C#.

$myArray = array();

In PHP I don't have to declare a memory size for the array. What if I don't know big I need my array?

$myArray = array("Name" => "Steve");

How do I do the above in C#?

$myArray = array();
$myArray['Names'][0] = "Steve";
$myArray['Names'][1] = "Jim";

How does the above work in C#"?

Answer 1

$myArray = array("Name" => "Steve");

This is a map. PHP doesn't need you to know that, but C# does. You would implement this as:

var myArray = new Dictionary<String, String>();

For your second case

$myArray['Names'][0] = "Steve";

This is a dictionary where the keys are Strings, but the values are String[] . In C#:

var myArray = new Dictionary<String, List<String>>();

Answer 2

arrays in PHP are most like maps or C# Dictionary . An array in PHP is actually what is called an associative array . So for your code above the C# equivalent is:

        Dictionary<string, string> items= new Dictionary<string, string>();  
        items.Add("Name", "Steve");  

if you want a key to point to multiple values:

        Dictionary<string, ICollection<string>> items= new  
                           Dictionary<string, ICollection<String>>();    
        ICollection<string> names = new List<string>();  
        names.Add("Steve");     
        items.Add("Name", names);