MVC Foolproof Validation是一个数据模型类库扩展。

操作符验证

   1: public class SignUpViewModel
   2: {
   3:     [Required]
   4:     public string Password { get; set; }
   5:  
   6:     [EqualTo("Password", ErrorMessage="Passwords do not match.")]
   7:     public string RetypePassword { get; set; }
   8: }
   9: public class EventViewModel
  10: {
  11:     [Required]
  12:     public string Name { get; set; }
  13:  
  14:     [Required]
  15:     public DateTime Start { get; set; }
  16:  
  17:     [Required]
  18:     [GreaterThan("Start")]
  19:     public DateTime End { get; set; }
  20: }

有效的操作符验证器

   1: [Is]
   2: [EqualTo]
   3: [NotEqualTo]
   4: [GreaterThan]
   5: [LessThan]
   6: [GreaterThanOrEqualTo]
   7: [LessThanOrEqualTo]

非空验证

   1: private class Person
   2: {
   3:     [Required]
   4:     public string FirstName { get; set; }
   5:  
   6:     [Required]
   7:     public string LastName { get; set; }
   8:  
   9:     public bool Married { get; set; }
  10:  
  11:     [RequiredIfTrue("Married")]
  12:     public string MaidenName { get; set; }
  13: }

条件非空验证

   1: [RequiredIf]
   2: [RequiredIfNot]
   3: [RequiredIfTrue]
   4: [RequiredIfFalse]
   5: [RequiredIfEmpty]
   6: [RequiredIfNotEmpty]
   7: [RequiredIfRegExMatch]
   8: [RequiredIfNotRegExMatch]

启用客户端验证

要启用客户端验证，必须包含标准的客户端验证文件和MvcFoolproofValidation.js文件：

   1: <script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script>
   2: <script src="../../Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script>
   3: <script src="../../Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script>
   4: <script src="../../Scripts/MvcFoolproofValidation.js" type="text/javascript"></script>

jQuery验证

如果使用jQuery验证，则必须包含标准的客户端验证文件和MvcFoolproofJQueryValidation.js文件： 

   1: <script src="../../Scripts/jquery.js" type="text/javascript"></script>
   2: <script src="../../Scripts/jquery-validate.js" type="text/javascript"></script>
   3: <script src="../../Scripts/MicrosoftMvcJQueryValidation.js" type="text/javascript"></script>
   4: <script src="../../Scripts/MvcFoolproofJQueryValidation.js" type="text/javascript"></script>

复杂自定义验证

自定义验证属性：

   1: public class RoleValidInDepartmentAttribute : ModelAwareValidationAttribute
   2: {
   3:     //this is needed to register this attribute with foolproof's validator adapter
   4:     static RoleValidInDepartmentAttribute() { Register.Attribute(typeof(RoleValidInDepartmentAttribute)); }
   5:  
   6:     public override bool IsValid(object value, object container)
   7:     {
   8:         if (value != null && value.ToString() == "Software Developers")
   9:         {
  10:             //if the role was software developers, we need to make sure the user is in the IT department
  11:             var model = (CreateUserViewModel)container;
  12:             return model.Department == "IT Department";
  13:         }
  14:  
  15:         //the user wasn't in a constrained role, so just return true
  16:         return true;
  17:     }
  18: }

应用到模型之中：

   1: public class CreateUserViewModel
   2: {
   3:     [Required]
   4:     public string Username { get; set; }
   5:  
   6:     [Required]
   7:     public string Department { get; set; }
   8:  
   9:     [Required]
  10:     [RoleValidInDepartment(ErrorMessage="This role isn't valid for the selected department.")]
  11:     public string Role { get; set; }
  12: }

Foolproof Provides Contingent Data Annotation Validation for ASP.NET MVC 2

Build Model-Aware Custom Validation Attributes in ASP.NET MVC 2

Client Side Model-Aware Validation

 

官方地址：http://foolproof.codeplex.com

Tag asp.net mvc2 数据模型验证类库,mvc foolproof validation
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