Result class in C#

Result.cs

using System;

namespace TodoApi
{
    /// <summary>
    /// A generic result class that should enough
    /// to get rid of exceptions and be general enough
    /// for handling all kind of errors.
    ///
    /// User is forced to handle error case to get success
    /// value.
    ///
    /// <example>
    /// <code>
    ///     var result = Result<int, string>.Success(1);
    ///     string filtered = result.Match(
    ///         success => success.ToString(),
    ///         error => error,
    ///     );
    /// </code>
    /// </example>
    /// </summary>
    public class Result<T, E>
    {
        readonly T Val;
        readonly E Err;
        readonly bool IsSuccess;
        bool IsError { get => !IsSuccess; }

        protected Result(T val)
        {
            Val = val;
            IsSuccess = true;
        }

        protected Result(E error)
        {
            Err = error;
            IsSuccess = false;
        }

        public static Result<T, E> Success(T value) =>
            new Result<T, E>(value);

        public static Result<T, E> Error(E error) =>
            new Result<T, E>(error);

        public R Match<R>(
                Func<T, R> SucFn,
                Func<E, R> ErrFn)
        {
            return IsSuccess ? SucFn(Val) : ErrFn(Err);
        }

    }
}