Could not create an instance of type Contentful.Core.Models.IContent

[himynameistim]

I'm getting the error "Newtonsoft.Json.JsonSerializationException: 'Could not create an instance of type Contentful.Core.Models.IContent. Type is an interface or abstract class and cannot be instantiated" when trying to Deserialize to a model with a Document in it.

The model looks like this (other properties removed as they all work)

public class Navigation { public SystemProperties Sys { get; set; } public string Title { get; set; } public List<object> PrimaryNavigation { get; set; } }

public class ArticleMenu { public Document Article1Description { get; set; } }

Code that does the deserializing looks like this:

var client = new ContentfulClient(httpClient, options); var builder = new QueryBuilder<Navigation>().ContentTypeIs("navigation").Include(2).Limit(1); var entries = await client.GetEntries<Navigation>(builder);

if (entries.Any()) { var entry = entries.FirstOrDefault(); foreach (var contentfulNavItem in entry.PrimaryNavigation) { var contentfulNavItemDeserialized = JsonConvert.DeserializeObject<Entry<object>>(contentfulNavItem.ToString()); if (contentfulNavItemDeserialized.SystemProperties.ContentType.SystemProperties.Id == "articleMenu") { var contentfulNavItemDeserializedAsArticleMenu = JsonConvert.DeserializeObject<Models.Contentful.ArticleMenu>(contentfulNavItem.ToString()); } } }

The initial query to Contentful gets an item with a Content Type of Navigation which contains a list of items in the navigation. These can be different types but just showing one for simplicity. The call to deserialize when one is an article menu that contains a rich text is the issue.

Article1Descriptions data looks like this

[Roblinde]

Hi @himynameistim

I think you probably want to change your List