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using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Globalization;
using System.Linq;
using System.Web.Mvc.Properties;
namespace System.Web.Mvc
{
public class ValidatableObjectAdapter : ModelValidator
{
public ValidatableObjectAdapter(ModelMetadata metadata, ControllerContext context)
: base(metadata, context)
{
}
public override IEnumerable<ModelValidationResult> Validate(object container)
{
// NOTE: Container is never used here, because IValidatableObject doesn't give you
// any way to get access to your container.
object model = Metadata.Model;
if (model == null)
{
return Enumerable.Empty<ModelValidationResult>();
}
IValidatableObject validatable = model as IValidatableObject;
if (validatable == null)
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture,
MvcResources.ValidatableObjectAdapter_IncompatibleType,
typeof(IValidatableObject).FullName,
model.GetType().FullName));
}
ValidationContext validationContext = new ValidationContext(validatable, null, null);
return ConvertResults(validatable.Validate(validationContext));
}
private IEnumerable<ModelValidationResult> ConvertResults(IEnumerable<ValidationResult> results)
{
foreach (ValidationResult result in results)
{
if (result != ValidationResult.Success)
{
if (result.MemberNames == null || !result.MemberNames.Any())
{
yield return new ModelValidationResult { Message = result.ErrorMessage };
}
else
{
foreach (string memberName in result.MemberNames)
{
yield return new ModelValidationResult { Message = result.ErrorMessage, MemberName = memberName };
}
}
}
}
}
}
}
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