I have created an mvc site and I\'m posting a large amount of json form data (Content-Type:application/x-www-form-urlencoded) back to the mvc controller. When I
Content-Type:application/x-www-form-urlencoded
The default formvalue(not formkey) limit is 1024.
Also, I think you can just change the FormOptions limit in Startup.cs file.
FormOptions
public void ConfigureServices(IServiceCollection services) { services.Configure(options => { options.ValueCountLimit = int.MaxValue; }); }