FileExtensionsAttributeAdapter.cs

// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.

using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;

namespace System.Web.Mvc
{
    internal class FileExtensionsAttributeAdapter : DataAnnotationsModelValidator<FileExtensionsAttribute>
    {
        public FileExtensionsAttributeAdapter(ModelMetadata metadata, ControllerContext context, FileExtensionsAttribute attribute)
            : base(metadata, context, attribute)
        {
        }

        public override IEnumerable<ModelClientValidationRule> GetClientValidationRules()
        {
            var rule = new ModelClientValidationRule
            {
                ValidationType = "extension",
                ErrorMessage = ErrorMessage
            };
            rule.ValidationParameters["extension"] = Attribute.Extensions;
            yield return rule;
        }
    }
}