数据注释范围的日期

Question

它是能够使用 [Range] 注释的日期?

喜欢的东西

[Range(typeof(DateTime), DateTime.MinValue.ToString(), DateTime.Today.ToString())]

Answer 1

MSDN上的文档说你可以使用RangeAttribute

[Range(typeof(DateTime), "1/2/2004", "3/4/2004",
        ErrorMessage = "Value for {0} must be between {1} and {2}")]
public datetime Something { get; set;}

Answer 2

我这样做是为了解决你的问题

 public class DateAttribute : RangeAttribute
   {
      public DateAttribute()
        : base(typeof(DateTime), DateTime.Now.AddYears(-20).ToShortDateString(),     DateTime.Now.AddYears(2).ToShortDateString()) { } 
   }

Answer 3

jQuery验证不适用于[Range（typeof（DateTime），＆quot; date1＆quot;，＆quot; date2＆quot;] - 我的MSDN文档不正确

Answer 4

这是另一种解决方案。

[Required(ErrorMessage = "Date Of Birth is Required")]
[DataType(DataType.Date, ErrorMessage ="Invalid Date Format")]
[Remote("IsValidDateOfBirth", "Validation", HttpMethod = "POST", ErrorMessage = "Please provide a valid date of birth.")]
[Display(Name ="Date of Birth")]
public DateTime DOB{ get; set; }

简单地创建一个名为ValidationController的新MVC控制器并在那里通过此代码。关于“远程”的好消息方法是您可以利用此框架根据您的自定义逻辑处理任何类型的验证。

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net.Mail;
using System.Web;
using System.Web.Mvc;

namespace YOURNAMESPACEHERE
{
    public class ValidationController : Controller
    {
        [HttpPost]
        public JsonResult IsValidDateOfBirth(string dob)
        {
            var min = DateTime.Now.AddYears(-21);
            var max = DateTime.Now.AddYears(-110);
            var msg = string.Format("Please enter a value between {0:MM/dd/yyyy} and {1:MM/dd/yyyy}", max,min );
            try
            {
                var date = DateTime.Parse(dob);
                if(date > min || date < max)
                    return Json(msg);
                else
                    return Json(true);
            }
            catch (Exception)
            {
                return Json(msg);
            }
        }
    }
}

Answer 5

对于那些罕见的情况，当您被迫以字符串形式写日期时（使用属性时），我强烈建议使用 ISO-8601 表示法。 这消除了关于01/02/2004是1月2日还是2月1日的任何混淆。

[Range(typeof(DateTime), "2004-12-01", "2004-12-31",
    ErrorMessage = "Value for {0} must be between {1} and {2}")]
public datetime Something { get; set;}

Answer 6

我使用这种方法：

[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false)]
internal sealed class DateRangeAttribute : ValidationAttribute
{
    public DateTime Minimum { get; }
    public DateTime Maximum { get; }

    public DateRangeAttribute(string minimum = null, string maximum = null, string format = null)
    {
        format = format ?? @"yyyy-MM-dd'T'HH:mm:ss.FFFK"; //iso8601

        Minimum = minimum == null ? DateTime.MinValue : DateTime.ParseExact(minimum, new[] { format }, CultureInfo.InvariantCulture, DateTimeStyles.None); //0 invariantculture
        Maximum = maximum == null ? DateTime.MaxValue : DateTime.ParseExact(maximum, new[] { format }, CultureInfo.InvariantCulture, DateTimeStyles.None); //0 invariantculture

        if (Minimum > Maximum)
            throw new InvalidOperationException(
[DateRange("2004-12-01", "2004-12-2", "yyyy-M-d")]
ErrorMessage = "Value for {0} must be between {1} and {2}")]
quot;Specified max-date '{maximum}' is less than the specified min-date '{minimum}'");
    }
    //0 the sole reason for employing this custom validator instead of the mere rangevalidator is that we wanted to apply invariantculture to the parsing instead of
    //  using currentculture like the range attribute does    this is immensely important in order for us to be able to dodge nasty hiccups in production environments

    public override bool IsValid(object value)
    {
        if (value == null) //0 null
            return true;

        var s = value as string;
        if (s != null && string.IsNullOrEmpty(s)) //0 null
            return true;

        var min = (IComparable)Minimum;
        var max = (IComparable)Maximum;
        return min.CompareTo(value) <= 0 && max.CompareTo(value) >= 0;
    }
    //0 null values should be handled with the required attribute

    public override string FormatErrorMessage(string name) => string.Format(CultureInfo.CurrentCulture, ErrorMessageString, name, Minimum, Maximum);
}

并像这样使用它：

<*>

Answer 7

我找到问题所在 [Range(typeof(DateTime)] 注，并将它描述为"笨重的最好的"这叶子太多的机会，如果它的工作。

远程验证似乎是一个很好的方式：避免javascript在观点和维持服务器的端代码完整性、个人从来没有像发送代码要一个客户来执行，如果我可以避免它。

使用@StackThis答案作为一个基础和参考 文章 在远程验证MVC3

模型

public class SomeDateModel
{
    public int MinYears = 18;
    public int MaxYears = 110;

    [Display(Name = "Date of birth", Prompt = "e.g. 01/01/1900")]
    [Remote(action: "ValidateDateBetweenYearsFromNow", controller: "Validation", areaReference: AreaReference.UseRoot, AdditionalFields = "MinYears,MaxYears", HttpMethod = "GET" ,ErrorMessage = "Subject must be over 18")]
    public DateTime? DOB { get; set; }
}

控制部署在根目录

namespace Controllers
{
    public class ValidationController : Controller
    {
        [HttpGet]
        [ActionName("ValidateDateBetweenYearsFromNow")]
        public JsonResult ValidateDateBetweenYearsFromNow_Get()
        {
            //This method expects 3 parameters, they're anonymously declared through the Request Querystring,
            //Ensure the order of params is:
            //[0] DateTime
            //[1] Int Minmum Years Ago e.g. for 18 years from today this would be 18
            //[2] int Maximum Years Ago e.g. for 100 years from today this would be 100
            var msg = string.Format("An error occured checking the Date field validity");
            try
            {
                int MinYears = int.Parse(Request.QueryString[1]);
                int MaxYears = int.Parse(Request.QueryString[2]);

                //Use (0 - x) to invert the positive int to a negative.
                var min = DateTime.Now.AddYears((0-MinYears));
                var max = DateTime.Now.AddYears((0-MaxYears));

                //reset the response error msg now all parsing and assignmenst succeeded.
                msg = string.Format("Please enter a value between {0:dd/MM/yyyy} and {1:dd/MM/yyyy}", max, min);
                var date = DateTime.Parse(Request.QueryString[0]);
                if (date > min || date < max)
                    //switch the return value here from "msg" to "false" as a bool to use the MODEL error message
                    return Json(msg, JsonRequestBehavior.AllowGet);
                else
                    return Json(true, JsonRequestBehavior.AllowGet);
            }
            catch (Exception)
            {
                return Json(msg, JsonRequestBehavior.AllowGet);
            }
        }
    }
}

的 msg 变量是显示为的一部分Html帮助ValidationSummary或Html帮助ValidationFor(x=>x。DATETIME)

看

重要的是要注意的领域通过为参2和3必须存在的视图，以便用于远程验证传递的价值观的控制器：

    @Html.EditorFor(m => m.DOB)
    @Html.HiddenFor(m => m.MinYears)
    @Html.HiddenFor(m => m.MaxYears)
    @Html.ValidationSummary()

该模型和Html佣工将做所有的延对你的工作。