动态属性名称作为字符串 [英] Dynamic property name as string

问题描述

使用DocumentDB创建新文档时，我想动态设置属性名称​​ ，目前我设置的是 SomeProperty ，如下所示：

When creating a new document with DocumentDB, I would like to set the property name dynamically, currently I set SomeProperty, like this:

await client.CreateDocumentAsync("dbs/db/colls/x/" 
   , new { SomeProperty = "A Value" });

，但我想获得 SomeProperty 字符串中的属性名称，这样我就可以使用同一行代码访问不同的属性，例如：

, but I would like to get the SomeProperty property name from a string so that I can access different properties using the same line of code, like this:

void SetMyProperties()
{
    SetMyProperty("Prop1", "Val 1");
    SetMyProperty("Prop2", "Val 2");
}

void SetMyProperty(string propertyName, string val)
{
    await client.CreateDocumentAsync("dbs/db/colls/x/" 
       , new { propertyName = val });
}

这可能吗？

推荐答案

System.Dynamic.ExpandoObject 类型（该类型为作为DLR ）似乎与您所描述的很接近。它既可以用作动态对象，也可以用作字典（实际上是幕后的字典）。

The System.Dynamic.ExpandoObject type (which was introduced as part of the DLR) seems close to what you are describing. It can be used both as a dynamic object and as a dictionary (it actually is a dictionary behind the scenes).

用作动态对象：

dynamic expando = new ExpandoObject();
expando.SomeProperty = "value";

用作字典的用法：

IDictionary<string, object> dictionary = expando;
var value = dictionary["SomeProperty"];

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