串并MINLENGTH验证MAXLENGTH不工作（asp.net MVC） [英] String MinLength and MaxLength validation don't work (asp.net mvc)
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问题描述
我有这个类
使用System.ComponentModel.DataAnnotations;
使用Argussoft.BI.DAL.Domain.Users;命名空间Argussoft.BI.DAL.DTOs.UserDTOs
{
公共类CreateUserDto
{
[必需（的ErrorMessage =Введителогин）]
[MAXLENGTH（User.EmailLength，的ErrorMessage =Максимальнаядлиналогина40символов）]
[RegularEx pression（User.NameRegularEx pression，的ErrorMessage =Логинможетсодержатьтольколатинскиесимволы，дефисы，подчеркивания，точки）]
公共字符串名称{;组; } [必需（的ErrorMessage =Введите电子邮件）]
[MAXLENGTH（User.EmailLength，的ErrorMessage =Максимальнаядлинаадресаэлектроннойпочты100символов）]
[RegularEx pression（User.EmailRegularEx pression，的ErrorMessage =Введитекорректныйадресэлектроннойпочты）]
公共虚拟字符串电子邮件{获得;组; } [必需（的ErrorMessage =Введитеимяпользователя）]
[MAXLENGTH（User.FullNameLength，的ErrorMessage =Максимальнаядлинаименипользователя100символов）]
[RegularEx pression（User.NameRegularEx pression，的ErrorMessage =Имяпользователяможетсодержатьтольколатинскиесимволы，дефисы，подчеркивания，точки）]
公共虚拟字符串全名{获得;组; } 公共虚拟INT角色{搞定;组; } [RegularEx pression（User.PhoneRegularEx pression，的ErrorMessage =Введитекорректныйномертелефона）]
公共虚拟字符串电话{搞定;组; } 公共虚拟INT状态{搞定;组; } [必需（的ErrorMessage =Введитепароль）]
[MINLENGTH个（User.PasswordMinLength，的ErrorMessage =Минимальнаядлинапароля5символов）]
[MAXLENGTH（User.PasswordMaxLength，的ErrorMessage =Максимальнаядлинапароля20символов）]
[RegularEx pression（User.PasswordRegularEx pression，的ErrorMessage =Парольможетсодержатьтольколатинскиесимволы，дефисы，подчеркивания，точки）]
公共虚拟字符串密码{搞定;组; }
}
}
这种形式
@model Argussoft.BI.DAL.DTOs.UserDTOs.CreateUserDto@using（Ajax.BeginForm（CREATEUSER，用户，新AjaxOptions {=的onSuccessonSuccessCreateUser}，{新的id =dialog_form，@class =形横}））
{
＆LT; DIV CLASS =模头＆GT;
＆LT;按钮式=按钮级=关闭数据解雇=莫代尔ARIA隐藏=真＆GT;＆安培;倍;＆LT; /按钮＆GT;
＆LT; H4＆GT;Добавитьпользователя＆LT; / H4＆GT;
＆LT; / DIV＆GT;
＆LT; DIV CLASS =模体＆GT; ＆LT;！ - 姓名 - ＆GT;
＆LT; DIV CLASS =控制组＆GT;
＆LT;标签类=控制标签为=@ Html.NameFor（型号=＆GT; model.Name）＆GT;Логин＆LT; /标签＆gt;
＆LT; DIV CLASS =控制＆GT;
＆LT; DIV CLASS =输入 - prePEND＆GT;
@ Html.TextBoxFor（型号=＆GT; model.Name，新{@class =span3ID =input_name}）
＆LT; BR /＆GT;
@ Html.ValidationMessageFor（型号=＆GT; model.Name）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT; ＆LT;！ - 电子邮件 - ＆GT;
＆LT; DIV CLASS =控制组＆GT;
＆LT;标签类=控制标签为=@ Html.NameFor（型号=＆GT; model.Email）＆GT;电子邮件和LT; /标签＆gt;
＆LT; DIV CLASS =控制＆GT;
＆LT; DIV CLASS =输入 - prePEND＆GT;
@ Html.TextBoxFor（型号=＆GT; model.Email，新{@class =span3ID =input_email}）
＆LT; BR /＆GT;
@ Html.ValidationMessageFor（型号=＆GT; model.Email）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT; ＆LT;！ - 全名 - ＆GT;
＆LT; DIV CLASS =控制组＆GT;
＆LT;标签类=控制标签为=@ Html.NameFor（型号=＆GT; model.FullName）＆GT;Имяпользователя＆LT; /标签＆gt;
＆LT; DIV CLASS =控制＆GT;
＆LT; DIV CLASS =输入 - prePEND＆GT;
@ Html.TextBoxFor（型号=＆GT; model.FullName，新{@class =span3ID =input_full_name}）
＆LT; BR /＆GT;
@ Html.ValidationMessageFor（型号=＆GT; model.FullName）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT; ＆LT;！ - 角色 - ＆GT;
＆LT; DIV CLASS =控制组＆GT;
＆LT;标签类=控制标签为=@ Html.NameFor（型号=＆GT; model.Role）＆GT;Рольпользователя＆LT; /标签＆gt;
＆LT; DIV CLASS =控制＆GT;
＆LT; DIV CLASS =输入 - prePEND＆GT;
@ Html.DropDownList（角色，（的SelectList）ViewBag.Roles，新{ID =input_role}）
＆LT; BR /＆GT;
@ Html.ValidationMessageFor（型号=＆GT; model.Role）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT; ＆LT;！ - 电话 - ＆GT;
＆LT; DIV CLASS =控制组＆GT;
＆LT;标签类=控制标签为=@ Html.NameFor（型号=＆GT; model.Phone）＆GT;Контактныйтелефон＆LT; /标签＆gt;
＆LT; DIV CLASS =控制＆GT;
＆LT; DIV CLASS =输入 - prePEND＆GT;
@ Html.TextBoxFor（型号=＆GT; model.Phone，新{@class =span3ID =input_phone}）
＆LT; BR /＆GT;
@ Html.ValidationMessageFor（型号=＆GT; model.Phone）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT; ＆LT;！ - 状态 - ＆GT;
＆LT; DIV CLASS =控制组＆GT;
＆LT;标签类=控制标签为=@ Html.NameFor（型号=＆GT; model.Status）＆GT;Статуспользователя＆LT; /标签＆gt;
＆LT; DIV CLASS =控制＆GT;
＆LT; DIV CLASS =输入 - prePEND＆GT;
@ Html.DropDownList（状态，（的SelectList）ViewBag.UserStatuses，新{ID =input_status}）
＆LT; BR /＆GT;
@ Html.ValidationMessageFor（型号=＆GT; model.Status）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT; ＆LT;！ - 密码 - ＆GT;
＆LT; DIV CLASS =控制组＆GT;
＆LT;标签类=控制标签为=@ Html.NameFor（型号=＆GT; model.Password）＆GT;Парольпользователя＆LT; /标签＆gt;
＆LT; DIV CLASS =控制＆GT;
＆LT; DIV CLASS =输入 - prePEND＆GT;
@ Html.TextBoxFor（型号=＆GT; model.Password，新{@class =span3ID =input_password}）
＆LT; BR /＆GT;
@ Html.ValidationMessageFor（型号=＆GT; model.Password）
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
＆LT; / DIV＆GT;＆LT; / DIV＆GT;
＆LT; DIV CLASS =模式躯＆GT;
＆LT; A HREF =@ Url.Action（UserIndex，用户）级=BTN＆GT;Отменить＆LT; / A＆GT;
＆LT;按钮式=提交ID =save_button级=BTN BTN-小学＆GT;Сохранить＆LT; /按钮＆GT;
＆LT; / DIV＆GT;
}
但我的验证只能所需和 RegularEx pression 和 MINLENGTH个不工作， 最大长度我不明白在这种情况下任何错误消息。
什么可能是一个原因？
解决方案
<一个href=\"http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.maxlengthattribute%28v=vs.103%29.aspx\">MaxLength用于实体框架来决定如何大，以使一个字符串值字段时，它会创建数据库。
从MSDN：
指定数组的最大长度
还是允许在属性字符串数据。<一个href=\"http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.stringlengthattribute.aspx\">StringLength是将被用于用户输入的验证数据注解
从MSDN：
指定的最小和最大
字符长度被允许
在一个数据字段非定制
使用
[字符串长度][RegularEx pression（@^ {5} $，最少需要3个字符的ErrorMessage =）
[必需的（=的ErrorMessage必需）]
[StringLength（30，MinimumLength = 3的ErrorMessage =无效）]
30是最大长度结果最小长度= 3
自定义StringLengthAttribute类
公共类MyStringLengthAttribute：StringLengthAttribute
{
公共MyStringLengthAttribute（INT maximumLength）
：基地（maximumLength）
{
} 公众覆盖BOOL的IsValid（对象的值）
{
字符串VAL = Convert.ToString（值）;
如果（val.Length＆LT; base.MinimumLength）
base.ErrorMessage =最小长度应该是3;
如果（val.Length＆GT; base.MaximumLength）
base.ErrorMessage =最大长度应当是6;
返回base.IsValid（值）;
}
}公共类MyViewModel
{
[MyStringLength（6，MinimumLength = 3）]
公共字符串myProperty的{搞定;组; }
}I have this class
using System.ComponentModel.DataAnnotations; using Argussoft.BI.DAL.Domain.Users; namespace Argussoft.BI.DAL.DTOs.UserDTOs { public class CreateUserDto { [Required(ErrorMessage = "Введите логин")] [MaxLength(User.EmailLength, ErrorMessage = "Максимальная длина логина 40 символов")] [RegularExpression(User.NameRegularExpression, ErrorMessage = "Логин может содержать только латинские символы, дефисы, подчеркивания, точки")] public string Name { get; set; } [Required(ErrorMessage = "Введите Email")] [MaxLength(User.EmailLength, ErrorMessage = "Максимальная длина адреса электронной почты 100 символов")] [RegularExpression(User.EmailRegularExpression, ErrorMessage = "Введите корректный адрес электронной почты")] public virtual string Email { get; set; } [Required(ErrorMessage = "Введите имя пользователя")] [MaxLength(User.FullNameLength, ErrorMessage = "Максимальная длина имени пользователя 100 символов")] [RegularExpression(User.NameRegularExpression, ErrorMessage = "Имя пользователя может содержать только латинские символы, дефисы, подчеркивания, точки")] public virtual string FullName { get; set; } public virtual int Role { get; set; } [RegularExpression(User.PhoneRegularExpression, ErrorMessage = "Введите корректный номер телефона")] public virtual string Phone { get; set; } public virtual int Status { get; set; } [Required(ErrorMessage = "Введите пароль")] [MinLength(User.PasswordMinLength, ErrorMessage = "Минимальная длина пароля 5 символов")] [MaxLength(User.PasswordMaxLength, ErrorMessage = "Максимальная длина пароля 20 символов")] [RegularExpression(User.PasswordRegularExpression, ErrorMessage = "Пароль может содержать только латинские символы, дефисы, подчеркивания, точки")] public virtual string Password { get; set; } } }and this form
@model Argussoft.BI.DAL.DTOs.UserDTOs.CreateUserDto @using (Ajax.BeginForm("CreateUser", "User", new AjaxOptions { OnSuccess = "onSuccessCreateUser" }, new { id = "dialog_form", @class = "form-horizontal" })) { <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4>Добавить пользователя</h4> </div> <div class="modal-body"> <!-- Name --> <div class="control-group"> <label class="control-label" for="@Html.NameFor(model => model.Name)">Логин</label> <div class="controls"> <div class="input-prepend"> @Html.TextBoxFor(model => model.Name, new { @class = "span3", id = "input_name" }) <br /> @Html.ValidationMessageFor(model => model.Name) </div> </div> </div> <!-- Email --> <div class="control-group"> <label class="control-label" for="@Html.NameFor(model => model.Email)">Email</label> <div class="controls"> <div class="input-prepend"> @Html.TextBoxFor(model => model.Email, new { @class = "span3", id = "input_email" }) <br /> @Html.ValidationMessageFor(model => model.Email) </div> </div> </div> <!-- FullName --> <div class="control-group"> <label class="control-label" for="@Html.NameFor(model => model.FullName)">Имя пользователя</label> <div class="controls"> <div class="input-prepend"> @Html.TextBoxFor(model => model.FullName, new { @class = "span3", id = "input_full_name" }) <br /> @Html.ValidationMessageFor(model => model.FullName) </div> </div> </div> <!-- Role --> <div class="control-group"> <label class="control-label" for="@Html.NameFor(model => model.Role)">Роль пользователя</label> <div class="controls"> <div class="input-prepend"> @Html.DropDownList("Role", (SelectList)ViewBag.Roles,new{id ="input_role"}) <br /> @Html.ValidationMessageFor(model => model.Role) </div> </div> </div> <!-- Phone --> <div class="control-group"> <label class="control-label" for="@Html.NameFor(model => model.Phone)">Контактный телефон</label> <div class="controls"> <div class="input-prepend"> @Html.TextBoxFor(model => model.Phone, new { @class = "span3", id = "input_phone" }) <br /> @Html.ValidationMessageFor(model => model.Phone) </div> </div> </div> <!-- Status --> <div class="control-group"> <label class="control-label" for="@Html.NameFor(model => model.Status)">Статус пользователя</label> <div class="controls"> <div class="input-prepend"> @Html.DropDownList("Status", (SelectList)ViewBag.UserStatuses,new{id ="input_status"}) <br /> @Html.ValidationMessageFor(model => model.Status) </div> </div> </div> <!-- Password --> <div class="control-group"> <label class="control-label" for="@Html.NameFor(model => model.Password)">Пароль пользователя</label> <div class="controls"> <div class="input-prepend"> @Html.TextBoxFor(model => model.Password, new { @class = "span3", id = "input_password" }) <br /> @Html.ValidationMessageFor(model => model.Password) </div> </div> </div> </div> <div class="modal-footer"> <a href="@Url.Action("UserIndex", "User")" class="btn">Отменить</a> <button type="submit" id="save_button" class="btn btn-primary">Сохранить</button> </div> }but my validation works only for Required and
RegularExpressionand doesn't work forMinLengthandMaxLengthand I don't get any error message in this case.What can be a reason?
解决方案MaxLength is used for the Entity Framework to decide how large to make a string value field when it creates the database.
From MSDN:
Specifies the maximum length of array or string data allowed in a property.
StringLength is a data annotation that will be used for validation of user input.
From MSDN:
Specifies the minimum and maximum length of characters that are allowed in a data field.
Non Customized
Use
[String Length][RegularExpression(@"^.{5,}$", ErrorMessage = "Minimum 3 characters required")] [Required(ErrorMessage = "Required")] [StringLength(30, MinimumLength = 3, ErrorMessage = "Invalid")]
30 is the Max Length
Minimum length = 3
Customized StringLengthAttribute Class
public class MyStringLengthAttribute : StringLengthAttribute { public MyStringLengthAttribute(int maximumLength) : base(maximumLength) { } public override bool IsValid(object value) { string val = Convert.ToString(value); if (val.Length < base.MinimumLength) base.ErrorMessage = "Minimum length should be 3"; if (val.Length > base.MaximumLength) base.ErrorMessage = "Maximum length should be 6"; return base.IsValid(value); } } public class MyViewModel { [MyStringLength(6, MinimumLength = 3)] public String MyProperty { get; set; } }
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