使用annotation在.NET MVC的Model进行数据校验_mvc的数据校验(数据库和非数据库的dataannotation启用验证)-优快云博客

本文详细介绍了MVC框架中数据注解的使用方法，包括验证属性的类型、显示名称、显示格式、是否必填、正则表达式验证、数值范围验证、字符串长度限制、绑定字段等。并通过示例代码展示了具体应用。

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可用的属性如下：

Data Annotation Validator Attributes

DataType

Specify the datatype of a property
DisplayName

specify the display name for a property.
DisplayFormat

specify the display format for a property like different format for Date proerty.
Required

Specify a property as required.
ReqularExpression

validate the value of a property by specified regular expression pattern.
Range

validate the value of a property with in a specified range of values.
StringLength

specify min and max length for a string property.
MaxLength

specify max length for a string property.
Bind

specify fields to include or exclude when adding parameter or form values to model properties.
ScaffoldColumn

specify fields for hiding from editor forms.

具体的用法如下：

using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Web.Mvc;
namespace Employee.Models
{
 [Bind(Exclude = "EmpId")]
 public class Employee
 {
 [ScaffoldColumn(false)]
 public int EmpId { get; set; }
 
 [DisplayName("Employee Name")]
 [Required(ErrorMessage = "Employee Name is required")]
 [StringLength(100,MinimumLength=3)]
 public String EmpName { get; set; } 
 
 [Required(ErrorMessage = "Employee Address is required")] 
 [StringLength(300)]
 public string Address { get; set; } 
 
 [Required(ErrorMessage = "Salary is required")] 
 [Range(3000, 10000000,ErrorMessage = "Salary must be between 3000 and 10000000")]
 public int Salary{ get; set; } 
 
 [Required(ErrorMessage = "Please enter your email address")] 
 [DataType(DataType.EmailAddress)]
 [Display(Name = "Email address")]
 [MaxLength(50)]
 [RegularExpression(@"[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}", ErrorMessage = "Please enter correct email")]
 public string Email { get; set; }
 }
}