Question Validation

[Adrian_Mills]

Hi i am struggling getting validation working here is the current scenario as dictated by the design brief

we have a core class

    abstract public class Customer_Core:Core, ICore


    {
        string organizationName;


        [Key]
        public long CustomerId { get; set; }


        public string OrganizationName
        {


            get
            {
                return organizationName;
            }


            set
            {
                organizationName = value;
                RaisePropertyChanged("OrganizationName");
            }
        }
}

this is then used as a base class for our model Customer

in the view model we have the following

    public class VMRowBase<R>:IRow<R> where R : class, ICore
    {


        public bool IsNew { get; set; }
        public bool IsDeleted { get; set; }
        public R Entity { get; set ; }
    }

 public class VMBase<T> : BaseINPC, INotifyDataErrorInfo, IVMBase, IBaseViewModel<T> where T : class, ICore
    {
         IRow<T> _selectedRow;

         public IRow<T> SelectedRow
        {
            get
            {
                return _selectedRow;
            }
            set
            {
                _selectedRow = value;
                
            }
        }
     }

On the view for the customer we have the following

<TextBox x:Name="organizationNameTextBox"  HorizontalAlignment="Left" Height="22"  Text="{Binding SelectedRow.Entity.OrganizationName, Mode=TwoWay, NotifyOnValidationError=true, ValidatesOnExceptions=true}" VerticalAlignment="Center" Width="120" Margin="160,68,0,10"/>

When validation is called and an error is present for this field (this is only field i am testing at the moment) we have the following

  internal void SetErrorDetails(ValidationResult Result)
        {
            propErrors = (Dictionary<string,List<string>>) Result.ErrorContent;


            OnPropertyErrorsChanged(propErrors.First().Key);
            string field = "SelectedRow.Entity." + propErrors.First().Key;


            OnPropertyErrorsChanged(field);


        }

all this is working fine however when the GetErrors method is being called no property name is passed in and it is treated as entity validation

if i change the view model and the view to have the field listed on there as

        public string OrganizationName
        {
            get
            {
                return SelectedRow.Entity.OrganizationName;
            }


            set
            {
                SelectedRow.Entity.OrganizationName = value;
                RaisePropertyChanged("OrganizationName");
            }
        }

Then it works however this isn't the desired way the company wants it to work as we will be duplicating fields.

Can any one explain how i can get the validation to work with out the field being on the view model?

Cheers
Adrian

 

[jmcilhinney]

I have edited your post for readability. Please be sure to use appropriate formatting tags when posting code snippets.