相关疑难解决方法(0)

行为[MaxLength]和[StringLength]属性有什么区别？

据我所知(除了[MaxLength]可以验证数组的最大长度)这些是相同的,有点多余？

我遇到了一个令人困惑的问题,在我的编辑或创建操作结果方法中,EF4将抛出一个DbEntityValidationException,内部消息说明:

字段Body必须是字符串或数组类型,最大长度为"128".

有问题的模型如下所示:

[Table("tblArticles")]
public class Article
{
    [Key]
    public int ID { get; set; }
    [Required(ErrorMessage="Title must be included")]
    public string Title { get; set; }
    [AllowHtml]
    public string Body { get; set; }
    [Required(ErrorMessage="Start Date must be specified")]
    [Display(Name="Start Date")]
    [DisplayFormat(DataFormatString="dd-mm-yyyy")]
    public DateTime? StartDate { get; set; }
    [Required(ErrorMessage = "End Date must be specified")]
    [Display(Name = "End Date")]
    public DateTime? EndDate { get; set; }
    public int Priority { get; set; }
    public bool Archived { get; …