Q:

Can't get Currency formatted textbox into a decimal Model (MVC)

Inside my application I have a text box that has javascript convert values into a currency format.  This is mandatory and nonnegotiable. 
ie.  5.50 becomes $5.50 and -5.50 becomes ($5.50)
When I try to save I get a validation error because $5.50 is not valid for the ViewModel
//View file
 @Html. CustomEditorFor(m => m.CurrentTotal, "currency")

//Controller file.  First thing in the controller method called
if (ModelState. IsValid)
{
//... not getting to this
}

//ViewModel file
[Display(Name = "Current Total:")]
public decimal CurrentTotal
{
  get
  {
    return PropertyDictionary. GetDecimal("CurrentTotal", 0).Value;
  }
  set
  {
    PropertyDictionary. SetDecimal("CurrentTotal", value);
  }
}

I was wondering how I remove non-numeric excluding "."  from the text box before it goes to the model and causes the ModelState to be invalid. 
Once again I have inherited this application and am learning so I appreciate the time and patience! 

A:

I still don't know how to do this in MVC (though it looks like I should use custom model binders) I made a work around for this problem.  
 $(document).submit(function () {
        $("input[type=text].currency").each
        (
            function () {
                $(this).val($(this).val().toString().replace('(', '-').replace("$", '').replace(")", ''));
            }
        );
    });

Hope this helps someone in the future.