using System; using System.ComponentModel.DataAnnotations; namespace HyperCube.Models { public class ArticleModel { public string Filename { get; set; } [Required] public string Name { get; set; } [Required] public DateTime PublishDate { get; set; } = DateTime.Now; [Required] public string Authors { get; set; } [Required] public string Keywords { get; set; } [Required] public string Annotation { get; set; } public string Text { get; set; } } }