Extending Entity Data Model

[Sevententh]

I'm trying to understand why part of my code will not work, on a partial class from a (service) EDM object table on the clientside. So here is the code:

public partial class tblSOM\_Supplier
{
    #region IDataErrorInfo Members
    public string Error
    {
        get { return ValidationHelper.GetError(SelfValidate()); }
    }

    public string this\[string columnName\]
    {
        get
        {
            var \_\_ValidationResults = SelfValidate();
            if (\_\_ValidationResults == null) return string.Empty;
            var \_\_ColumnResults = \_\_ValidationResults.Errors.FirstOrDefault<ValidationFailure>(x => string.Compare(x.PropertyName, columnName, true) == 0);

            return \_\_ColumnResults != null ? \_\_ColumnResults.ErrorMessage : string.Empty;
        }
    }
    #endregion

}

The problem is the public string this[string columnName] part. It doesn't recognise any of the properties from the table tblSOM_Supplier If I add a property

public String ThisTestProperty { get; set; }

to this partial class then it works exactly as it should! (Showing validation error on the TextBox) How can I get the EDM properties to function correctly in this modified partial class?

[Sevententh]

I now worked this out. I just needed to add IDataErrorInfo to the partial class! Simple really... I now have a project that validates data entry using FluentValidation, on Entity Data Model tables, in a MVVM project using WCF services! yippie...... If I get the time, this will be my first article, me thinks :-D ;P :~