i am receiving an error while returning `<IEnumerable<RiskValue>`.. ASP.NET [closed]

Question

var result = JsonConvert.DeserializeObject<Risks>(jsonData);
             var finalResult = result.Value.Where(x => x.ID == 5).ToList();
             return finalResult;
    

I am working on an API that returns <IEnumerable<RiskValue> the deserializing does not cause any error this error is shown when I return the final result, any idea of what causing this?

System.InvalidOperationException: The JSON property name for 'MyProject.Models.RisksValue.ID' collides 
with another property.

System.InvalidOperationException: The JSON property name for 'test_1.Models.RisksValue.ID' collides with another property.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_SerializerPropertyNameConflict(Type type, JsonPropertyInfo jsonPropertyInfo)

Answer 1

Try to set PropertyNameCaseInsensitive to false in your Startup.cs:

services.AddControllers().AddJsonOptions(options => { 
    options.JsonSerializerOptions.PropertyNamingPolicy = null; 
    
    //the importance here..
    options.JsonSerializerOptions.PropertyNameCaseInsensitive = false;
});