Validation on int data type asp .net mvc3

问题

I am getting The value 'abc' is not valid for fieldName. as error message. which is default error message and i want to override it in easier way.
as of now what i have tried is listed below

[RegularExpression(@"^\d+$",ErrorMessage="enter numeric value")]
[Integer(ErrorMessageResourceType = typeof(appName.Resources.abc.Resource), ErrorMessageResourceName = "error_numeric")]
[RegularExpression("([1-9][0-9]*)")]

Range(1,int.max,ErrorMessage="enter numeric value")
but failed to change default error message.
Suggest me the easiest possible way to do this.

   using System;
   using System.Collections.Generic;
   using System.Linq;
   using System.Web;
   using System.ComponentModel.DataAnnotations; 
   using System.Web.Mvc;

  namespace blueddPES.ViewModels
     {
     public class ContactViewModel
        {
         [Integer(ErrorMessage="sdfdsf")]
         public int? hp { get; set; }
        }

回答1:

Easiest way is to use Data Annotations Extensions. It has some useful attributes for things like Integers, etc.

Or you could write your own, like in: How to change 'data-val-number' message validation in MVC while it generate by helper

Edit: Added complete sample after comments.

I created a sample vanilla MVC 3 project and then did the following:

Added NuGet package DataAnnotationsExtensions.MVC3

Added a Model class:

public class IntegerSample
{
    [Required(ErrorMessage="Dude, please fill something in!")]
    [Integer(ErrorMessage="Are you stupid? Just fill in numbers only!")]
    public int? TestValue { get; set; }
}

Added a Home Controller:

public class HomeController : Controller
{
    //
    // GET: /Home/
    public ActionResult Index()
    {
        return View();
    }
}

Added a Home View:

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)
    <fieldset>
        <legend>IntegerSample</legend>
        <div class="editor-label">
            @Html.LabelFor(model => model.TestValue)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.TestValue)
            @Html.ValidationMessageFor(model => model.TestValue)
        </div>
        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>
}

I hope you get some more insights using this sample code. When I run this sample, it works just as you'd want to expect.

回答2:

You could implement a custom model binder as shown here or use a string datatype instead of integer and then apply the regular expression data annotation. Of course if you use a string datatype you might need to parse this string manually to the underlying datatype when mapping your view model to a domain model.

回答3:

We use an extended version of Phil Haack MetadataProvider which can do localization.

Take at look at this blog article: http://haacked.com/archive/2011/07/14/model-metadata-and-validation-localization-using-conventions.aspx

In summary:

It determines a resource key by using the class type + property, e.g. Person_FirstName
It looks up error messages by suffixing the validation property, e.g. Person_FirstName_Required
You just supply the resource file with those entries.

来源：https://stackoverflow.com/questions/9937512/validation-on-int-data-type-asp-net-mvc3

标签

ASP.NET

asp.net-mvc-3

data-annotations