How to Efficiently Retrieve Property Values from Dynamic Objects in .NET 4?

Accessing Property Values in .NET 4 Dynamic Objects

Standard reflection methods are unsuitable for extracting property values from dynamically-typed objects in .NET 4. This article presents a more effective solution.

Methodologies

For ExpandoObject-based dynamic objects, a direct cast leverages the inherent IDictionary<string, object> interface:

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

This approach, however, is limited to ExpandoObject instances. A more universal solution involves utilizing the Dynamic Language Runtime (DLR) through the IDynamicMetaObjectProvider interface. This provides a mechanism to access properties regardless of the underlying dynamic object's structure.

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