matthewsinex

public class FileAttribute : ValidationAttribute
{
  public string[] FileTypes { get; set; }
  protected override ValidationResult IsValid(object value, ValidationContext validationContext)
  {
    if (value is IFormFile)
    {
      return ValidateSingleFile((IFormFile)value);
    }
    else if (value is IEnumerable<IFormFile>)

matthewsinex

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;

namespace TestProjectMVC5.Models
{
    public class FileAttribute : ValidationAttribute
    {