c# - skydrive System.Dynamic.DynamicObject

Question

我正在尝试获取 SkyDrive 上登录用户的所有文件夹列表。

LiveOperationResult operationResult = await client.GetAsync("me/skydrive/files");
dynamic result = operationResult.Result;

我希望能够做这样的事情:

Dictionary<string, object> folderData = (Dictionary<string, object>)result;
List<object> folders = (List<object>)folderData["data"];

foreach (object item in folders)
{
    Dictionary<string, object> folder = (Dictionary<string, object>)item;
    if (folder["name"].ToString() == "Folder Name")
    {
        showToastMessage(folder["id"].ToString());
        return;
    }
}

但是，在这一行:

Dictionary<string, object> folderData = (Dictionary<string, object>)result;

我收到一个错误:

Cannot convert type 'System.Dynamic.DynamicObject' to 'System.Collections.Generic.Dictionary'

有人知道我该如何解决这个问题吗？

Answer 1

问题是 LiveOperationResult.Result 不一定保证是 Dictionary<string, object> .然而，它被定义为 IDictionary<string, object> .

请注意，您似乎甚至不需要转换 Result任何类型字典的属性；你应该可以使用 dynamic变量直接访问您要迭代的列表。

List<object> folders = (List<object>)result.data;