OpenAccess validation

[Alex Suutri]

Hello. I'm trying to evaluate OpenAccess ORM. I created internal interface with dataannotations and partial Bank class:

internal interface IBank
    {
        [Required(ErrorMessageResourceName = "BankNameMandatory", ErrorMessageResourceType = typeof(Resources))]
        [StringLength(50, ErrorMessageResourceName = "BankNameMaxLength",
            ErrorMessageResourceType = typeof(Resources))]
        string Name { get; set; }

        [Required(ErrorMessageResourceName = "BankCodeMandatory", ErrorMessageResourceType = typeof(Resources))]
        [StringLength(15, ErrorMessageResourceName = "BankCodeMaxLength",
            ErrorMessageResourceType = typeof(Resources))]
        string Code { get; set; }

        [StringLength(50, ErrorMessageResourceName = "BankAddressMaxLength",
            ErrorMessageResourceType = typeof(Resources))]
        string Address { get; set; }

        [StringLength(9, ErrorMessageResourceName = "BankExtraCodeMaxLength",
            ErrorMessageResourceType = typeof(Resources))]
        string ExtraCode { get; set; }
    }

     [MetadataType(typeof(IBank))]
    public partial class Bank : IDataErrorInfo, IBank
    {
         [NonSerialized]
         private readonly DataErrorInfoSupport _dataErrorInfoSupport;

         public Bank()
         {
             _dataErrorInfoSupport = new DataErrorInfoSupport(this);
         }
         #region IDataErrorInfo Members

         public string Error
         {
             get { return _dataErrorInfoSupport.Error; }
         }

         string IDataErrorInfo.this[string memberName]
         {
             get { return _dataErrorInfoSupport[memberName]; }
         }

         #endregion

       }

But i cannot get error. What i'm doing wrong?

[Dimitar Tachev]

Hi Alex,

In general one class could implement multiple interfaces that have the same properties with conflicting attributes on them. 

In this particular case it cannot be determined which are the attributes that should take precedence and for this reason using interfaces with Data Annotations is not allowed.

If it is applicable for you I suggest you to make the IBank interface an abstract class and inherit that class from the Bank one.

I hope this helps. Do not hesitate to contact us back if you need any further assistance.

Greetings, Dimitar Tachev
the Telerik team