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PastDateOnlyAttribute.cs
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PastDateOnlyAttribute.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Web.Mvc;
namespace UIDemos.Attributes
{
[AttributeUsage(AttributeTargets.Property)]
public class PastDateOnlyAttribute : ValidationAttribute, IClientValidatable
{
private const string DefaultErrorMessage = "Date must be earlier than today.";
public override string FormatErrorMessage(string name)
{
return DefaultErrorMessage;
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
if (value == null) return ValidationResult.Success;
var now = DateTime.Now.Date;
var dte = (DateTime)value;
return now <= dte ? new ValidationResult(FormatErrorMessage(validationContext.DisplayName)) : ValidationResult.Success;
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var rule = new ModelClientValidationPastDateOnlyRule(FormatErrorMessage(metadata.GetDisplayName()));
yield return rule;
}
}
public class ModelClientValidationPastDateOnlyRule : ModelClientValidationRule
{
private const string PastOnlyValidateType = "pastdateonly";
private const string MaxDate = "maxdate";
public ModelClientValidationPastDateOnlyRule(
string errorMessage)
{
ValidationType = PastOnlyValidateType;
ErrorMessage = errorMessage;
ValidationParameters.Add(MaxDate, DateTime.Now.Date.ToShortDateString());
}
}
}