Asp.Net MVC 2 - Changing the PropertyValueRequired string

Question

Using a resx file in the App_GlobalResources directory, I've been able to change the default message for the PropertyValueInvalid string of the model validators.

But it doesn't work to translate the message when a value is required (PropertyValueRequired.)

In the Global.asax.cs Application_Start() I've changed the resource class key, like this:

DefaultModelBinder.ResourceClassKey = "Messages";

And in the Messages.resx files I've put two entries:

"PropertyValueInvalid" => "O valor '{0}' é inválido para o campo {1}."
"PropertyValueRequired" = > "É necessário digitar o {0}."

Thanks.

@mare What is your exact problem - PropertyValueRequired message is not being used from resx file in modal validation using data annotation? — swapneel
– swapneel, Commented Mar 3, 2011 at 19:22
I think Darin's is a bit better , it's an upgrade of your solution. — mare
– mare, Commented Mar 10, 2011 at 21:05

takepara · Accepted Answer · 2011-03-06 00:53:44Z

17

RequiredAttribute not used DefaultModelBinder.GetValueRequiredResource. Create custom DataAnnotationsModelValidator class.

public class MyRequiredAttributeAdapter : RequiredAttributeAdapter
{
  public MyRequiredAttributeAdapter(ModelMetadata metadata, 
                                    ControllerContext context, 
                                    RequiredAttribute attribute) 
         : base(metadata, context, attribute)
  {
    attribute.ErrorMessageResourceType = typeof (Messages);
    attribute.ErrorMessageResourceName = "PropertyValueRequired";
  }
}

and register adapter in Global.asax.

DataAnnotationsModelValidatorProvider.RegisterAdapter(
    typeof(RequiredAttribute), 
    typeof(MyRequiredAttributeAdapter));

Hope this help!

Reusable Validation Error Message Resource Strings for DataAnnotations

answered Mar 6, 2011 at 0:53

takepara

10.5k3 gold badges36 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

8 Comments

mateuscb Over a year ago

+1 This is exactly what I have been looking for, thanks! (ps: the link is broken)

Laguna Over a year ago

this is the best answer i've found on this subject

MEMark Over a year ago

This is great. Please also see this for a solution to a trouble you might run into stackoverflow.com/a/16211476/268091

niico Over a year ago

Where is a good best practice place to store the DataAnnotationsModelValidator class?

niico Over a year ago

also what namespaces (using) does this require?

|

Darin Dimitrov · Accepted Answer · 2011-03-05 15:39:11Z

9

+25

This message is baked into System.ComponentModel.DataAnnotations assembly under the key RequiredAttribute_ValidationError. You could write a custom validation attribute:

public class MyRequiredAttribute : RequiredAttribute
{
    public MyRequiredAttribute()
    {
        ErrorMessageResourceType = typeof(Messages);
        ErrorMessageResourceName = "Required";
    }
}

and then inside your Messages.resx file define the Required string:

Required => É necessário digitar o {0}.

and finally decorate your view model property with this custom attribute:

public class MyViewModel
{
    [MyRequired]
    public int Foo { get; set; }
}

answered Mar 5, 2011 at 15:39

Darin Dimitrov

1.0m276 gold badges3.3k silver badges3k bronze badges

3 Comments

mare Over a year ago

So for the same concept the ASP.NET MVC team is using two different constructs?

Darin Dimitrov Over a year ago

@mare, we can only hope that this will be fixed/made easier in future versions of MVC.

Arnold Zokas Over a year ago

For this to work on client-side in ASP.NET MVC 3 you will need to either register the custom attribute (stackoverflow.com/a/5954452/169) or use AttributeAdapter approach (stackoverflow.com/a/5207912/169).

Community · Accepted Answer · 2020-06-20 09:12:55Z

0

How about

[Required (ErrorMessageResourceName="Required",ErrorMessageResourceType=typeof(Messages)]

public string Foo { get; set; }

Required => É necessário digitar o {0}.

Or

Required => {0} field is required.

Please refer below link for complete asp.net mvc localisation guide asp.net mvc localisation guide

edited Jun 20, 2020 at 9:12

CommunityBot

11 silver badge

answered Mar 5, 2011 at 16:36

swapneel

3,0711 gold badge27 silver badges32 bronze badges

2 Comments

mahdi gh Over a year ago

how to make it global so it doesn't need to add (ErrorMessageResourceName="Required",ErrorMessageResourceType=typeof(Messages). or how to make error message for the field needed a integer value but user enters 'abc'

swapneel Over a year ago

not sure what you mean by - make it global but for integer value error message - Does this help? stackoverflow.com/questions/9522369/…

Karthikeyan P · Accepted Answer · 2015-08-25 08:48:49Z

0

Just add like this

[Required(ErrorMessage = "Your Error Message, here..!")]

answered Aug 25, 2015 at 8:48

Karthikeyan P

1,2651 gold badge21 silver badges23 bronze badges

Collectives™ on Stack Overflow

Asp.Net MVC 2 - Changing the PropertyValueRequired string

4 Answers 4

8 Comments

3 Comments

2 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

8 Comments

3 Comments

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related