Asp.Net MVC 4.0 Model Localization With RegularExpression and ErrorMessage - regex

Question

How to create my custom RegularExpressionValidator that gets the RegularExpression and ErrorMessage from Resource file?
[RegularExpression(#"\d{5}(-\d{4})?",
ErrorMessageResourceType = typeof(Global), ErrorMessageResourceName = "regExpValforPostal_ErrorMessage")]
public string PostalCode { get; set; }

Answer 1

The resource file name is Global :
Global.resx, Global.zh.resx, Global.fr-ca.resx
[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false)]
public class LocalizedRegexAttribute : RegularExpressionAttribute
{
static LocalizedRegexAttribute()
{
// necessary to enable client side validation
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(LocalizedRegexAttribute), typeof(RegularExpressionAttributeAdapter));
}
public LocalizedRegexAttribute(string _RegularExpression, string _ErrorMessageResourceName, Type _ErrorMessageResourceType)
: base(LoadRegex(_RegularExpression))
{
ErrorMessageResourceType = _ErrorMessageResourceType;
ErrorMessageResourceName = _ErrorMessageResourceName;
}
private static string LoadRegex(string key)
{
var resourceManager = new ResourceManager(typeof(Water.Localization.Resources.Global));
return resourceManager.GetString(key);
}
In your model class you need to pass 3 parameters with the custom data
annotation as follows:
[LocalizedRegex("regExpValforPostal_ValidationExpression", "regExpValforPostal_ErrorMessage", typeof(Global))]
public string PostalCode { get; set; }

Answer 2

if your resources file called Validations.he.resx
and inside it you have both 'RegexExpression' and 'ErrorMessage' you should use this:
UPDATE #1: Option 2 added
Option 1:
public class LocalizedRegexAttribute :RegularExpressionAttribute
{
public LocalizedRegexAttribute () : base(Validations.RegexExpression)
{
}
public override string FormatErrorMessage(string name)
{
return base.FormatErrorMessage(ValidationStrings.ErrorMessage);
}
}
Option 2:
public class EmailAddressAttribute :ValidationAttribute {
public EmailAddressAttribute()
{
}
public override bool IsValid(object value)
{
Regex regex = new Regex(Validations.RegexExpression);
return regex.IsMatch(value.ToString());
}
public override string FormatErrorMessage(string name)
{
return base.FormatErrorMessage(ValidationStrings.ErrorMessage);
} }
than you will use it like this:
[LocalizedRegexAttribute]
public string PostalCode { get; set; }