JSON properties now lower case on swap from ASP .Net Core 1.0.0-rc2-final to 1.0.0

Question

I\'ve just swapped our project from ASP .Net Core 1.0.0-rc2-final to 1.0.0. Our website and client have stopped working because of the capitalization of JSON properties. For

Answer 1

For Core 2.x versions, using this code you can avoid camel case names by default. You need to add following code inside the ConfigureServices method of Startup.cs file.

services.AddMvc()
.AddJsonOptions(o =>
{
    if (o.SerializerSettings.ContractResolver != null)
    {
        var castedResolver = o.SerializerSettings.ContractResolver
        as DefaultContractResolver;

        castedResolver.NamingStrategy = null;
    }
});

Answer 2

This will fix it in dotnet core 3 webapi, so that it doesn't change your property names at all, and you return to your client exactly what you intended to.

In Startup.cs:

public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllers().AddJsonOptions(options => options.JsonSerializerOptions.PropertyNamingPolicy = null);
        services.AddHttpClient();
    }