CODEWITHSUNDEEP
c#validationasp.net-core
bardamu
bardamu

Reputation: 59

Invalid decimal validation

I wrote an application with model validation, but when i try to enter decimal values i'm getting

The value '12.12' is not valid for Price.

[Required(ErrorMessage = "Price is required.")]
[Range(0, 9999.99)]
[DataType(DataType.Currency)]
public decimal Price { get; set; }

Upvotes: 2

Views: 1581

Answers (3)

Mohsen Zahraee
Mohsen Zahraee

Reputation: 3483

in dotnet core mvc 5 and above you can set NumberDecimalSeparator="."

var supportedCultures = new[] { "ar", "es" };
var localizationOptions = new RequestLocalizationOptions().SetDefaultCulture(supportedCultures[0])
        .AddSupportedCultures(supportedCultures)
        .AddSupportedUICultures(supportedCultures);
           
localizationOptions.DefaultRequestCulture.Culture.NumberFormat.NumberDecimalSeparator=".";
    
app.UseRequestLocalization(localizationOptions);

Upvotes: 1

Gautham Srinivasan
Gautham Srinivasan

Reputation: 308

I just stumbled on this again after 2 years. I thought ASP.NET MVC 5 had solved this but looks like it's not the case. So here goes how to solve the problem.

Create a class called DecimalModelBinder like the following and add it to the root of your project for example:

using System;
using System.Globalization;
using System.Web.Mvc;

namespace YourNamespace
{   
    public class DecimalModelBinder : IModelBinder
    {
        public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
        {
            ValueProviderResult valueResult = bindingContext.ValueProvider
                .GetValue(bindingContext.ModelName);

            ModelState modelState = new ModelState { Value = valueResult };

            object actualValue = null;

            if(valueResult.AttemptedValue != string.Empty)
            {
                try
                {
                    actualValue = Convert.ToDecimal(valueResult.AttemptedValue, CultureInfo.CurrentCulture);
                }
                catch(FormatException e)
                {
                    modelState.Errors.Add(e);
                }
            }

            bindingContext.ModelState.Add(bindingContext.ModelName, modelState);

            return actualValue;
        }
    }
}

Inside Global.asax.cs, make use of it in Application_Start() like this:

ModelBinders.Binders.Add(typeof(decimal?), new DecimalModelBinder());

Upvotes: 3

bardamu
bardamu

Reputation: 59

ok, so i added in my Startup.cs

services.Configure<RequestLocalizationOptions>(options =>
{
options.DefaultRequestCulture = new RequestCulture("en-US");
});

and

  app.UseRequestLocalization();

and it worked

Upvotes: 2

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