How to Resolve the JSON.Net 'Self Referencing Loop Detected' Exception During List Serialization?

JSON.Net "Self Referencing Loop Detected" Exception During List Serialization

When serializing a list of objects using JSON.Net, an "Self Referencing Loop Detected" exception might occur. This error indicates that objects within the list reference each other in a circular manner, causing the serialization process to loop indefinitely.

In the provided code, the error occurs while serializing a list of Route objects. The exception suggests that there is a self-referencing loop within the objects, likely caused by a reference to another object within the same list.

One possible solution is to ignore the reference loop using the "ReferenceLoopHanding.Ignore" setting in the JSON serializer settings. However, this approach doesn't resolve the underlying issue and might lead to data loss.

To avoid the error and ensure proper serialization, it is recommended to disable lazy loading and proxy creation in the DbContext class constructor. This can be achieved by adding the following lines:

this.Configuration.LazyLoadingEnabled = false;
this.Configuration.ProxyCreationEnabled = false;

By disabling lazy loading and proxy creation, the data context will not automatically load linked entities, which resolves the circular referencing issue. This allows JSON.Net to serialize the list of Route objects without encountering the self-referencing loop exception.

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