for 遍历 Dictionary

public static void Main(string[] args)
{
    Dictionary<string,string> dictionary =new Dictionary<string, string>();
    dictionary["engine1"] = "unity";
    dictionary["engine2"] = "cocos";

    //方法一
    var array = dictionary.ToArray();
    for (int idx = 0; idx < array.Count(); idx++)
    {
        var itemKey = array[idx].Key;
        var itemValue = array[idx].Value;
        Console.Write("key:{0} ,value:{1}\n", itemKey, itemValue);
    }


    //方法二
    for (int index = 0; index < dictionary.Count; index++)
    {
        //根据索引获取
        var item = dictionary.ElementAt(index);
        var itemKey = item.Key;
        var itemValue = item.Value;
        Console.Write("\nkey:{0} ,value:{1}\n", itemKey, itemValue);
    }

}