MVC strip mask characters

In Previous post,I created masked inputs but on form post,it is posting mask characters as well. We can strip these characters using ModelBinders and thus can post numeric data only.

Common\ModelBinders\StripMaskCharacters.cs

11. using System;
12. using System.Collections.Generic;
13. using System.Linq;
14. using System.Text.RegularExpressions;
15. using System.Web;
16. using System.Web.Mvc;
17. using MvcLists.Common.CustomAttributes;
18.  
19. namespace MvcLists.Common.ModelBinders
20. {
21.     public class StripMaskCharacters : DefaultModelBinder
22.     {
23.         protected override void SetProperty(ControllerContext controllerContext,
24.                                             ModelBindingContext bindingContext,
25.                                             System.ComponentModel.PropertyDescriptor propertyDescriptor,
26.                                             object value)
27.         {
28.            if(value!=null && propertyDescriptor.PropertyType==(typeof(string)))
29.            {
30.                value = ((string) value).Trim();
31.                if ((string)value == string.Empty)
32.                {
33.                    value = null;
34.                }
35.                else if(propertyDescriptor.Attributes[typeof(MaskAttribute)]!=null
36.                    && bindingContext.ValueProvider.GetValue(propertyDescriptor.Name)!=null
37.                    && bindingContext.ValueProvider.GetValue(propertyDescriptor.Name).AttemptedValue!=null)
38.                {
39.                    value = Regex.Replace(bindingContext.ValueProvider.GetValue(propertyDescriptor.Name).AttemptedValue,
40.                                          "[^0-9]", string.Empty);
41.                }
42.            }
43.             base.SetProperty(controllerContext, bindingContext, propertyDescriptor, value);
44.         }
45.     }
46. }

Then register this model binder in Application_Start of global.asax

Global.asax

35. using System;
36. using System.Collections.Generic;
37. using System.Linq;
38. using System.Web;
39. using System.Web.Mvc;
40. using System.Web.Routing;
41. using FluentValidation.Mvc;
42. using MvcLists.Common.DataAnnotations;
43. using MvcLists.Common.ModelBinders;
44.  
45. namespace MvcLists
46. {
47.     // Note: For instructions on enabling IIS6 or IIS7 classic mode,
48.     // visit http://go.microsoft.com/?LinkId=9394801
49.  
50.     public class MvcApplication : System.Web.HttpApplication
51.     {
52.         public static void RegisterGlobalFilters(GlobalFilterCollection filters)
53.         {
54.             filters.Add(new HandleErrorAttribute());
55.         }
56.  
57.         public static void RegisterRoutes(RouteCollection routes)
58.         {
59.             routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
60.  
61.             routes.MapRoute(
62.                 "Default", // Route name
63.                 "{controller}/{action}/{id}", // URL with parameters
64.                 new { controller = "Person", action = "Index", id = UrlParameter.Optional } // Parameter defaults
65.             );
66.  
67.         }
68.  
69.         protected void Application_Start()
70.         {
71.             AreaRegistration.RegisterAllAreas();
72.  
73.             RegisterGlobalFilters(GlobalFilters.Filters);
74.             RegisterRoutes(RouteTable.Routes);
75.             ModelMetadataProviders.Current=new MyModelMetaDataProvider();
76.             ModelBinders.Binders.DefaultBinder = new StripMaskCharacters();
77.             FluentValidationModelValidatorProvider.Configure();
78.         }
79.         protected void Application_BeginRequest()
80.         {
81.             HttpContext.Current.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));
82.             HttpContext.Current.Response.Cache.SetValidUntilExpires(false);
83.             HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
84.             HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
85.             HttpContext.Current.Response.Cache.SetNoStore();
86.  
87.         }
88.     }
89. }