Fix swagger stuck on extend an API: How to configure Swashbuckle to ignore property on model


I found the root cause is that the JSON generated by swagger is too large: Swagger outputs over 18000 lines for that API! Further research told me that two property fields contribute about 17000 lines. So how to configure swagger to ignore these two properties is the key. After googling a while, I found VeganHunter's answer in this thread Reference is the simplest.

Solution for .NET Core 3.1 and .NET Standard 2.1:

Use JsonIgnore from System.Text.Json.Serialization namespace.

( JsonIgnore from Newtonsoft.Json will NOT work )

public class Test
    public int HiddenProperty { get; set; }
    public int VisibleProperty { get; set; }

Hope it could also help someone else. 😀