Form submit resulting in “InvalidDataException: Form value count limit 1024 exceeded.” In ASP.NET Core
You can change the default formvalue limit using the FormOptions . If you are using MVC, then you can create a filter and decorate on action where you want to extend this limit and keep the default for rest of the actions. namespace Filter { using System; using Microsoft.AspNetCore.Http.Features; using Microsoft.AspNetCore.Mvc.Filters; /// <summary> /// Request Form Size Limit Attribute /// </summary> /// <seealso cref="System.Attribute" /> /// <seealso cref="Microsoft.AspNetCore.Mvc.Filters.IAuthorizationFilter" /> /// <seealso cref="Microsoft.AspNetCore.Mvc.Filters.IOrderedFilter" /> [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)] public class RequestFormSizeLimitAttribute : Attribute, IAuthorizationFilter { /// <summary> /// The form options /// </summary> private read