How to Retrieve Properties and Values from a .NET 4 Dynamic Object?

Retrieving properties from dynamic objects in .NET 4

Dynamic objects declared using the dynamic keyword in .NET 4 can cause challenges when trying to retrieve property values ​​via reflection.

Question:

How to get a dictionary of attribute names and their corresponding values ​​from a dynamic object?

Example:

<code class="language-csharp">dynamic s = new ExpandoObject();
s.Path = "/Home";
s.Name = "Home";

// 如何枚举 Path 和 Name 属性并检索它们的值？
IDictionary<string, object> propertyValues = ???</code>

Answer:

For ExpandoObject objects, the solution is very simple. ExpandoObject implements the IDictionary<string, object> interface for its properties:

<code class="language-csharp">IDictionary<string, object> propertyValues = (IDictionary<string, object>)s;</code>

Please note that this method may not work for all dynamic objects. For more general dynamic objects, you need to use the DLR via IDynamicMetaObjectProvider.

The above is the detailed content of How to Retrieve Properties and Values from a .NET 4 Dynamic Object?. For more information, please follow other related articles on the PHP Chinese website!