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>();

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 : List>
{
    public void Add(TKey key, TValue value)
    {
        Add(new KeyValuePair(key, value));
    }
}

public class Program
{
    public static void Main()
    {
        var list = new KeyValueList
                   {
                       { "key1", "value1" },
                       { "key2", "value2" },
                       { "key3", "value3" },
                   };
    }
}