Convert từ kiểu ExpandoObject sang kiểu dữ liệu cụ thể

Giả sử bạn có class Person

public class Person
{
	public string Name { get; set; }
	public int Age { get; set; }
}

Bạn có data dynamic như sau:

using System.Dynamic;

dynamic expando = new ExpandoObject();
expando.Name = "John Doe";
expando.Age = 30;
expando.Address = new ExpandoObject();
expando.Address.State = "WA";
Console.WriteLine(expando.Address.State);

Cách 1

using ExpandoObjectExample;
using Newtonsoft.Json;

//--your old code
var convertedObject = JsonConvert.DeserializeObject<Person>(JsonConvert.SerializeObject(expando));
Console.WriteLine(convertedObject.Name);

Cách 2

public static TObject ToObject<TObject>(this IDictionary<string, object> someSource, BindingFlags bindingFlags = BindingFlags.Instance | BindingFlags.Public)
	   where TObject : class, new()
{
	Contract.Requires(someSource != null);
	TObject targetObject = new TObject();
	Type targetObjectType = typeof(TObject);

	// Go through all bound target object type properties...
	foreach (PropertyInfo property in
				targetObjectType.GetProperties(bindingFlags))
	{
		// ...and check that both the target type property name and its type matches
		// its counterpart in the ExpandoObject
		if (someSource.ContainsKey(property.Name)
			&& property.PropertyType == someSource[property.Name].GetType())
		{
			property.SetValue(targetObject, someSource[property.Name]);
		}
	}

	return targetObject;
}

Sử dụng

var person = ((ExpandoObject)expando).ToObject<Person>();
Console.WriteLine(person.Name);