error with decimal in mvc3 – the value is not valid for field

by

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());

More Related Contents:

  1. Polymorphic model binding
  2. ViewModel with List and editor templates
  3. How do I specify different Layouts in the ASP.NET MVC 3 razor ViewStart file?
  4. Replace line break characters with in ASP.NET MVC Razor view
  5. ASP.NET MVC 3 – Partial vs Display Template vs Editor Template
  6. Add CSS or JavaScript files to layout head from views or partial views
  7. Writing/outputting HTML strings unescaped
  8. In MVC3 Razor, how do I get the html of a rendered view inside an action?
  9. MVC 3 Model Binding a Sub Type (Abstract Class or Interface)
  10. Using MVC HtmlHelper extensions from Razor declarative views
  11. How to render a Section in a Partial View in MVC3?
  12. Razor-based view doesn’t see referenced assemblies
  13. HTML.ActionLink vs Url.Action in ASP.NET Razor
  14. Differences between Html.TextboxFor and Html.EditorFor in MVC and Razor
  15. Saving Many to Many relationship data on MVC Create view
  16. ASP.NET MVC 3 Razor – Adding class to EditorFor
  17. Can Razor views be compiled?
  18. How can I load Partial view inside the view?
  19. Is it possible to create a generic @helper method with Razor?
  20. Razor actionlink autogenerating ?length=7 in URL?
  21. Html.Textbox VS Html.TextboxFor
  22. Set disable attribute based on a condition for Html.TextBoxFor
  23. Does Razor syntax provide a compelling advantage in UI markup?
  24. Why doesn’t Visual Studio code formatting work properly for Razor markup?
  25. How to create a function in a cshtml template?
  26. Razor ViewEngine HTML.Checkbox method creates a hidden input. Why? [duplicate]
  27. Html.DisplayFor not posting values to controller in ASP.NET MVC 3
  28. How do I create a MVC Razor template for DisplayFor()
  29. Razor Nested WebGrid
  30. Steve Sanderson’s BeginCollectionItem helper won’t bind correctly

Leave a Comment