Question

我正在尝试将FormCollection传递给我的ASP.NET MVC Controller并将其转换为动态对象，然后将其序列化为Json并传递给我的Web API。

    [HttpPost]
    public ActionResult Create(FormCollection form)
    {
        var api = new MyApiClient(new MyApiClientSettings());

        dynamic data = new ExpandoObject();

        this.CopyProperties(form, data); // I would like to replace this with just converting the NameValueCollection to a dynamic

        var result = api.Post("customer", data);

        if (result.Success)
            return RedirectToAction("Index", "Customer", new { id = result.Response.CustomerId });

        ViewBag.Result = result;

        return View();
    }

    private void CopyProperties(NameValueCollection source, dynamic destination)
    {
        destination.Name = source["Name"];
        destination.ReferenceCode = source["ReferenceCode"];
    }

我见过将动态对象转换为Dictionary或NameValueValueCollection的示例，但需要采用其他方式。

任何帮助都将不胜感激。

Answer 1

快速谷歌搜索出现了这个：

http://theburningmonk.com/2011/05/idictionarystring-object-to-expandoobject-extension-method/

所以你可以这样做：

IDictionary<string, string> dict = new Dictionary<string, string> { { "Foo", "Bar" } };
dynamic dobj = dict.ToExpando();
dobj.Foo = "Baz";

这就是你要找的东西吗？

Answer 2

我已经展示了如何在下面创建和dynamic dictionary/keyvaluepair。我添加了一个扩展方法，将字典转换为NameValueCollection。

这对我来说效果很好，但你应该注意的一点是，Dictionary不允许重复键，而NameValueCollection也是如此。如果您尝试移动到词典，那么可能会抛出异常。

void Main()
{
    dynamic config = new ExpandoObject();
    config.FavoriteColor = ConsoleColor.Blue;
    config.FavoriteNumber = 8;
    Console.WriteLine(config.FavoriteColor);
    Console.WriteLine(config.FavoriteNumber);

    var nvc = ((IDictionary<string, object>) config).ToNameValueCollection();
    Console.WriteLine(nvc.Get("FavoriteColor"));
    Console.WriteLine(nvc["FavoriteNumber"]);
    Console.WriteLine(nvc.Count);
}

public static class Extensions
{
    public static NameValueCollection ToNameValueCollection<TKey, TValue>(this IDictionary<TKey, TValue> dict)
    {
        var nvc = new NameValueCollection();
        foreach(var pair in dict)
        {
            string value = pair.Value == null ? null : value = pair.Value.ToString();
            nvc.Add(pair.Key.ToString(), value);
        }

        return nvc;
    }

}

将NameValueCollection转换为动态对象

2 个答案: