mcs/class/System.Web.Mvc/System.Web.Mvc/ModelBinderAttribute.cs

   1 /* ****************************************************************************\r
   2  *\r
   3  * Copyright (c) Microsoft Corporation. All rights reserved.\r
   4  *\r
   5  * This software is subject to the Microsoft Public License (Ms-PL). \r
   6  * A copy of the license can be found in the license.htm file included \r
   7  * in this distribution.\r
   8  *\r
   9  * You must not remove this notice, or any other, from this software.\r
  10  *\r
  11  * ***************************************************************************/\r
  12 \r
  13 namespace System.Web.Mvc {\r
  14     using System;\r
  15     using System.Globalization;\r
  16     using System.Web.Mvc.Resources;\r
  17 \r
  18     [AttributeUsage(ValidTargets, AllowMultiple = false, Inherited = false)]\r
  19     public sealed class ModelBinderAttribute : CustomModelBinderAttribute {\r
  20 \r
  21         public ModelBinderAttribute(Type binderType) {\r
  22             if (binderType == null) {\r
  23                 throw new ArgumentNullException("binderType");\r
  24             }\r
  25             if (!typeof(IModelBinder).IsAssignableFrom(binderType)) {\r
  26                 string message = String.Format(CultureInfo.CurrentUICulture,\r
  27                     MvcResources.ModelBinderAttribute_TypeNotIModelBinder, binderType.FullName);\r
  28                 throw new ArgumentException(message, "binderType");\r
  29             }\r
  30 \r
  31             BinderType = binderType;\r
  32         }\r
  33 \r
  34         public Type BinderType {\r
  35             get;\r
  36             private set;\r
  37         }\r
  38 \r
  39         public override IModelBinder GetBinder() {\r
  40             try {\r
  41                 return (IModelBinder)Activator.CreateInstance(BinderType);\r
  42             }\r
  43             catch (Exception ex) {\r
  44                 throw new InvalidOperationException(\r
  45                     String.Format(\r
  46                         CultureInfo.CurrentUICulture,\r
  47                         MvcResources.ModelBinderAttribute_ErrorCreatingModelBinder,\r
  48                         BinderType.FullName),\r
  49                     ex);\r
  50             }\r
  51         }\r
  52 \r
  53     }\r
  54 }\r