asp.net mvc validation annotation for dollar currency

Question

I am validation for Html.TextBoxFor. Here is my code on the view

@Html.TextBoxFor(m => m.Amount, new {@class = \"form-control\", Value = Stri         


        

Answer 1

You can create you own Binder object to handle this. First create this object:

public class DoubleModelBinder : IModelBinder
{
  public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
  {
    ValueProviderResult valueResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
    ModelState modelState = new ModelState { Value = valueResult };
    object actualValue = null;
    try
    {
      if (!string.IsNullOrEmpty(valueResult.AttemptedValue))
        actualValue = Convert.ToDouble(valueResult.AttemptedValue.Replace("$", ""), System.Globalization.CultureInfo.CurrentCulture);
    }
    catch (FormatException e)
    {
      modelState.Errors.Add(e);
    }

    if (bindingContext.ModelState.ContainsKey(bindingContext.ModelName))
      bindingContext.ModelState[bindingContext.ModelName] = modelState;
    else
      bindingContext.ModelState.Add(bindingContext.ModelName, modelState);
    return actualValue;
  }
}

Then in your Global.asax.cs file in the Application_Start function, add this:

ModelBinders.Binders.Add(typeof(double?), new DoubleModelBinder());