Decimal numbers in ASP.NET MVC 5 app

Question

I have a problem with decimal numbers.

If I use .(dot) instead of ,(comma) in the textbox it comes null in controller.

I know its a language issue because in spanish we use comma instead of dot for decimals but I need to use dot.

It is possible to change this?

It is strange because in controller I have to use .(dot) for decimals i.e:

I can do float x = 3.14 but I can not do float x = 3,14 so I do not understand this... In some cases I have to use dot... In others I have to use comma...

This is my code:

In model:

[Display(Name = "Total")]
public double Total { get; set; }

In view:

@Html.EditorFor(model => model.Total, new { id = "Total", htmlAttributes = new {@class = "form-control" } })

In controller:

public ActionResult Create([Bind(Include = "ID,Codigo,Fecha,Trabajo,Notas,BaseImponible,Iva,Total,Verificado,FormaDePagoID,ClienteID")] Presupuesto presupuesto)
    {

Answer 1

Thanks everybody. I found this code from Phil Haack that works pretty well.

Create a class in any folder of your project

public class ModelBinder
{
    public class DecimalModelBinder : DefaultModelBinder
    {
        public override object BindModel(ControllerContext controllerContext,
                                         ModelBindingContext bindingContext)
        {
            object result = null;

            // Don't do this here!
            // It might do bindingContext.ModelState.AddModelError
            // and there is no RemoveModelError!
            // 
            // result = base.BindModel(controllerContext, bindingContext);

            string modelName = bindingContext.ModelName;
            string attemptedValue =
                bindingContext.ValueProvider.GetValue(modelName).AttemptedValue;

            // Depending on CultureInfo, the NumberDecimalSeparator can be "," or "."
            // Both "." and "," should be accepted, but aren't.
            string wantedSeperator = NumberFormatInfo.CurrentInfo.NumberDecimalSeparator;
            string alternateSeperator = (wantedSeperator == "," ? "." : ",");

            if (attemptedValue.IndexOf(wantedSeperator) == -1
                && attemptedValue.IndexOf(alternateSeperator) != -1)
            {
                attemptedValue =
                    attemptedValue.Replace(alternateSeperator, wantedSeperator);
            }

            try
            {
                if (bindingContext.ModelMetadata.IsNullableValueType
                    && string.IsNullOrWhiteSpace(attemptedValue))
                {
                    return null;
                }

                result = decimal.Parse(attemptedValue, NumberStyles.Any);
            }
            catch (FormatException e)
            {
                bindingContext.ModelState.AddModelError(modelName, e);
            }

            return result;
        }
    }
}

Add this to Application_Start() method in Global.asax

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

Now use decimal type instead of float or double and everything will go fine !! Thank you mates see you around !.