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 MVC 2
Build Model-Aware Custom Validation Attributes in MVC 2
Client Side Model-Aware Validation
官方地址：
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