How to Prevent 'Self-Referencing Loop Detected' Exceptions When Serializing Data with JSON.Net?

Preventing Self-Referencing Loop Exception with JSON.Net

In the process of transferring a list of Route objects from your data service to an ASP.Net MVC view, you've encountered the "Self Referencing Loop Detected" exception. While suppressing the exception with ReferenceLoopHandling.Ignore may temporarily silence the error, it does not resolve the issue of the list not being passed to the view.

The root cause of the exception lies in the inherent self-referencing structures present within your data model. Entities such as Route and Lot may maintain relationships with each other, creating circular references. When JSON.Net attempts to serialize such structures, it can get trapped in an endless loop, resulting in the exception.

To prevent this issue and enable seamless serialization of your list, it is necessary to disable the automatic tracking of entities and proxy creation in your data context. Within the constructor of your DbContext class, add the following lines:

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

These settings will instruct Entity Framework to eagerly load entities and avoid creating proxy objects, effectively breaking the circular references and preventing the exception. As a result, JSON.Net will be able to successfully serialize your list and transfer the data to your view.

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