JSON.NET Error Self referencing loop detected for type

Question

I tried to serialize POCO class that was automatically generated from Entity Data Model .edmx and when I used ``` JsonConvert.SerializeObject ``` I got the following error: Error Self referencing loop detected for type System.data.entity occurs. How do I solve this problem?

Accepted Answer

Use JsonSerializerSettings

- `ReferenceLoopHandling.Error` (default) will error if a reference loop is encountered. This is why you get an exception.

- `ReferenceLoopHandling.Serialize` is useful if objects are nested but not indefinitely.

- `ReferenceLoopHandling.Ignore` will not serialize an object if it is a child object of itself.

Example:

```
JsonConvert.SerializeObject(YourPOCOHere, Formatting.Indented, 
new JsonSerializerSettings 
{ 
        ReferenceLoopHandling = ReferenceLoopHandling.Serialize
});
```

Should you have to serialize an object that is nested indefinitely you can use PreserveObjectReferences to avoid a StackOverflowException.

Example:

```
JsonConvert.SerializeObject(YourPOCOHere, Formatting.Indented, 
new JsonSerializerSettings 
{ 
        PreserveReferencesHandling = PreserveReferencesHandling.Objects
});
```

Pick what makes sense for the object you are serializing.

Reference http://james.newtonking.com/json/help/

JSON.NET Error Self referencing loop detected for type

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