Restsharp - Exception due to XElement property - restsharp

Question

I need to make a REST request and pass an object which has a property of XElement type.
The object:
public class Test
{
public string Property1 {get;set;}
public XElement PropertyXml {get;set;}
}
The code:
var testObj = new Test();
testObj.Property1 = "value";
testObj.PropertyXml = new XElement("test");
var level1 = new XElement("level1", "value111");
testObj.PropertyXml.Add(level1);
var client = new RestClient();
client.BaseUrl = new Uri(string.Format(_url));
var rRequest = new RestRequest(_address, Method.POST);
rRequest.RequestFormat = DataFormat.Json;
rRequest.AddBody(testObj);
var response = client.Execute(rRequest);
I get a 'System.StackOverflowException' at the line with AddBody call.
PS I can pass a Test object using HttpClient (I use the PostAsJsonAsync method) instead of Restsharp.
Any ideas would be appreciated ..

Answer 1

RestSharp has no inherent knowledge of XElement, and AddBody will attempt to serialize it like it would any other POCO type - by traversing its properties. You can see this process getting stuck in an infinite cycle quite easily:
testObj.FirstNode.Parent.FirstNode.Parent....
Your best bet is to change the type of your PropertyXml property to a simple POCO type that the XML structure can easily map to. Something like:
public class PropertyStructure
{
public string level1 {get;set;}
}
public class Test
{
public string Property1 {get; set;}
public PropertyStructure PropertyXml {get; set;}
}