如何从List& lt; dynamic& gt()获取数据? [英] How to fetch data from List<dynamic>()?

问题描述

我的代码就是这样

var eventDocs = new List<dynamic>();     
foreach (var node in eventtypeNode.GetDescendantNodes())
{
    string files = node.GetProperty("document").Value;
    eventDocs.Add(new { Id = node.Id, Name = node.Name, CreatedOn = node.CreateDate, Path = files });
}

这很好.现在，我试图从此动态列表中获取数据

This works good. Now I am trying to fetch the data out of this dynamic list

foreach (var eventDoc in eventDocs)
{
     eventDoc.----  //nothing comes on intellisence
}

IntelliSense没事吗?我做错什么了吗?

Nothing comes on IntelliSense? Am I doing anything wrong?

推荐答案

您不会从Intellisense那里得到任何东西，因为您有 List< dynamic> .您说的是:我不知道在编译时此列表将包含什么.当我访问元素的成员时，只需在执行时动态绑定即可."

You won't get anything from Intellisense precisely because you've got a List<dynamic>. You're saying, "I don't know at compile-time what this list will contain. When I access members of the elements, just bind that dynamically at execution-time."

鉴于您将绑定时间推迟到执行时间，为什么对Intellisense无法判断列表中的内容感到惊讶呢?

Given that you're deferring binding to execution time, why would you be surprised that Intellisense can't tell what will be in the list?

在我看来，您应该更改代码以使用LINQ查询开头-然后您可以拥有一个具有已知元素类型的列表，该元素类型将是匿名类型.

It looks to me like you should change your code to use a LINQ query to start with - then you can have a list with a known element type, which will be an anonymous type.

var eventDocs = eventtypeNode.GetDescendantsNodes()
      .Select(node => new { Id = node.Id, 
                            Name = node.Name, 
                            CreatedOn = node.CreateDate,
                            Path = node.GetProperty("document").Value })
      .ToList();

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