ASP.NET Core MVC 模型验证示例

小鱼儿 2021-06-26 16:06 373阅读 0赞

using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.ComponentModel.DataAnnotations;
    using System.Linq;
    using System.Threading.Tasks;
    
    namespace WebCoreDemo.Models
    { 
        /// <summary>
        /// 学生模型
        /// </summary>
        public class Student
        { 
            // Display 显示
    
            /// <summary>
            /// 学号
            /// </summary>
            public int Id {  get; set; }
    
            /// <summary>
            /// 姓名
            /// </summary>
            [Display(Name = "姓名")]
            [Required(ErrorMessage = "请输入名字"),MaxLength(50,ErrorMessage = "名字的长度不能超过50个字符")]
            public string Name {  get; set; }
    
            /// <summary>
            /// 班级 ?为可空
            /// </summary>
            [Display(Name = "班级信息")]
            [Required(ErrorMessage = "请选择班级信息")]
            public ClassNameEnum? ClassName {  get; set; }
    
            /// <summary>
            /// 邮箱
            /// </summary>
            [Display(Name = "邮箱地址")]
            [Required(ErrorMessage = "请输入邮箱地址")]
            [RegularExpression(@"^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$",
                ErrorMessage = "邮箱的格式不正确")]
            public string Email {  get; set; }
    
            /// <summary>
            /// 图片地址
            /// </summary>
            [Display(Name = "图片地址")]
            public string PhotoPath {  get; set; }
        }
    
        /*** 模型验证 * Required 指定该字段是必填的 * Range 指定允许的最小值和最大值 * MinLength 只用MinLength指定字符串的最小长度 * MaxLength 使用MaxLength指定字符串的最大长度 * Compare 比较模型的2个属性。例如比较Email和ComfirmEmail属性 * RegularExpression 正则表达式 验证提供的值是否与正则表达式指定的模式匹配 */
    
    
      /// <summary>
      /// 血糖视图模型
      /// </summary>
      public class SugarModel
      { 
        /// <summary>
        /// 用户Id
        /// </summary>
        [Required]
        public Guid Id {  get; set; }
    
        /// <summary>
        /// 血糖值
        /// </summary>
        [DisplayName("血糖值"), Required(ErrorMessage = "请填写{0}")]
        public double XueTang {  get; set; }
    
        /// <summary>
        /// 日期（年月日）
        /// </summary>
        [DisplayName("采集日期"), Required(ErrorMessage = "请选择{0}")]
        public DateTime GatherDate {  get; set; }
      }
    
    
    
     /// <summary>
      /// 登录视图模型
      /// </summary>
      public class LoginModel
      { 
        /// <summary>
        /// 用户名
        /// </summary>
        [DisplayName("用户名"), Display(Name = "用户名"), Required(ErrorMessage = "请填写{0}"), StringLength(12, MinimumLength = 5, ErrorMessage = "{0}长度为{1}至{2}个字符")]
        public string UserName {  get; set; }
    
        /// <summary>
        /// 密码
        /// </summary>
        [DisplayName("密码"), Display(Name = "密码"), Required(ErrorMessage = "请填写{0}"), StringLength(24, MinimumLength = 8, ErrorMessage = "{0}长度为{1}至{2}个字符")]
        public string Password {  get; set; }
      }
    
    
      /// <summary>
      /// 病历信息模型
      /// </summary>
      public class MedicalModel
      { 
        /// <summary>
        /// 用户Id
        /// </summary>
        [Required]
        public Guid Id {  get; set; }
    
        /// <summary>
        /// 主诉
        /// </summary>
        [DisplayName("主诉"), Required(ErrorMessage = "{0}不能为空"), StringLength(24, ErrorMessage = "{0}最多包含{2}个字符")]
        public string ZhuSu {  get; set; }
    
        /// <summary>
        /// 检查
        /// </summary>
        [StringLength(36)]
        public string JianCha {  get; set; }
    
        /// <summary>
        /// 诊断
        /// </summary>
        [StringLength(36)]
        public string ZhenDuan {  get; set; }
    
        /// <summary>
        /// 处理
        /// </summary>
        [StringLength(52)]
        public string ChuLi {  get; set; }
    
        /// <summary>
        /// 诊断日期
        /// </summary>
        [DisplayName("诊断日期"), Required(ErrorMessage = "请选择{0}")]
        public DateTime DiagnoseDate {  get; set; }
      }
    
    
        [ProductRule]
        public class Product : IValidatableObject
        { 
            public int ID {  get; set; }
    
            [Display(Name = "产品编号")]
            [Required(ErrorMessage = "{0}是必填的")]
            public string ProductCode {  get; set; }
    
            [Display(Name = "产品名称")]
            [StringLength(50, MinimumLength = 5, ErrorMessage = "{0}的长度应在{2}~{1}之间")]
            [Required(ErrorMessage = "{0}是必填的")]
            public string ProductName {  get; set; }
    
            [Display(Name = "单价")]
            public decimal Amount {  get; set; }
    
            [Display(Name = "产品数量")]
            [Required(ErrorMessage = "{0}是必填的")]
            public int Qty {  get; set; }
    
            [Display(Name = "所有者邮箱")]
            [EmailAddress(ErrorMessage = "{0}格式不正确")]
            public string OwerEmail {  get; set; }
    
            [Display(Name = "备注")]
            [MaxLength(200, ErrorMessage = "{0}最大长度为200")]
            public string Remark {  get; set; }
    
            public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
            { 
                if (!Remark.Contains(ProductName))
                { 
                    yield return new ValidationResult(errorMessage: "备注中没有包含产品名称", 
                                                        new[] {  nameof(Remark) });
                    //new[] { nameof(Remark) }这个参数是一个数组，它表示这个错误是哪一个字段引起的，
                    //如果涉及到多个字段，那么应该归为这个类的错误，即：new[] { nameof(Product) }
                }
            }
        }
    
    
      /// <summary>
        /// 班级的枚举
        /// </summary>
        public enum ClassNameEnum
        { 
            [Display(Name = "未分配")]
            None,
            [Display(Name = "一年级")]
            FirstGrade,
            [Display(Name = "二年级")]
            SecondGrade,
            [Display(Name = "三年级")]
            GradeThree
        }
    
    
    }