System.Text.Json Deserialize nested object from API call - Data is wrapped in parent JSON property

Question

I have an API JSON response that wraps the data content in a data property, which looks like this:

{ 
   \"d         


        

Answer 1

It's possible to get a User object using System.Text.Json API without specifying a name of property data from your JSON sample

{ 
   "data":{ 
      "email":"admin@example.com",
      "mobile":"+1555555123",
      "id":4,
      "first_name":"Merchant",
      "last_name":"Vendor",
      "role":"Merchant",
   }
}

by the following code

var document = JsonDocument.Parse(json, new JsonDocumentOptions { AllowTrailingCommas = true });
var enumerator = document.RootElement.EnumerateObject();
if (enumerator.MoveNext())
{
    var userJson = enumerator.Current.Value.GetRawText();
    var user = JsonSerializer.Deserialize(userJson,
        new JsonSerializerOptions {AllowTrailingCommas = true});
}

In the sample above the JsonDocument is loaded, than RootElement is enumerated to get the first nested object as text to deserialize into User instance.

It's more easier to get a property by name like document.RootElement.GetProperty("data");, but the name can be different actually, according to your question. Accessing through indexer, like document.RootElement[0] is also not possible, because it works only when ValueKind of an element is Array, not the Object, like in your case

I've also changed the "id":4, to "id":"4",, because getting an error

Cannot get the value of a token type 'Number' as a string.