是否有可能使用[Range]标注的日期？
就像是
[Range(typeof(DateTime), DateTime.MinValue.ToString(), DateTime.Today.ToString())]
Answer 1:
在MSDN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您的问题
public class DateAttribute : RangeAttribute
{
public DateAttribute()
: base(typeof(DateTime), DateTime.Now.AddYears(-20).ToShortDateString(), DateTime.Now.AddYears(2).ToShortDateString()) { }
}
Answer 3:
jQuery验证不使用[范围（typeof运算（日期时间），“DATE1”，“日期2”]工作 - 我的MSDN文档是不正确
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; }
在简单地在那里创建一个名为ValidationController一个新的MVC控制器和过去的这个代码。 关于“远程”的做法的好处是，你可以利用这个框架来处理任何类型的基于自定义逻辑校验的。
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:
因为当你被迫写的日期作为字符串罕见的事件（使用属性的时候），我强烈建议使用ISO-8601的符号。 这消除了任何混乱，2004年1月2日是1月2日或2月1日。
[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:
我用这个方法：
[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($"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);
}
并使用它像这样：
[DateRange("2004-12-01", "2004-12-2", "yyyy-M-d")]
ErrorMessage = "Value for {0} must be between {1} and {2}")]
Answer 7:
我发现有问题[Range(typeof(DateTime)]标注和将之形容为“笨拙充其量”它留下太多的机会，如果它的工作原理。
远程验证似乎是一个好办法：避免意见JavaScript和维护服务器端代码的完整性，个人从来没有像发送代码到客户端执行，如果我能避免它。
使用@StackThis答案为基础，参考到物品上在MVC3远程验证
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; }
}
控制器-在根目录部署
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);
}
}
}
}
该msg变量被显示为HTML辅助的ValidationSummary或HTML辅助ValidationFor的部分（X => x.DATETIME）
视图
要注意，作为参数2和3通过了字段必须在视图中存在，为了使远程确认到值传递到所述控制器是很重要的：
@Html.EditorFor(m => m.DOB)
@Html.HiddenFor(m => m.MinYears)
@Html.HiddenFor(m => m.MaxYears)
@Html.ValidationSummary()
该模型和HTML助手将尽一切jQuery的为你工作。
文章来源: Data Annotation Ranges of Dates
