How do you use object initializers for a list of key value pairs?

Question

I can't figure out the syntax to do inline collection initialization for:

var a = new List<KeyValuePair<string, string>>(); 

Answer 1

Note that the dictionary collection initialization { { key1, value1 }, { key2, value2 } } depends on the Dictionary's Add(TKey, TValue) method. You can't use this syntax with the list because it lacks that method, but you could make a subclass with the method:

public class KeyValueList<TKey, TValue> : List<KeyValuePair<TKey, TValue>> {     public void Add(TKey key, TValue value)     {         Add(new KeyValuePair<TKey, TValue>(key, value));     } }  public class Program {     public static void Main()     {         var list = new KeyValueList<string, string>                    {                        { "key1", "value1" },                        { "key2", "value2" },                        { "key3", "value3" },                    };     } }