Compare the 2 passwords, MVVM Entity Framework.

Hey Andy, how can I cause a validation error if the re-entered password doesn't match the first password? 

Within my User Model in my database I don't have a property for the re-entered password, so I can't Bind to it in my ViewModel. 

<WrapPanel><TextBox Tag="Password..."
                Style="{StaticResource DefaultPasswordBox}"
                Text="{Binding EditVM.TheEntity.Hash,
        UpdateSourceTrigger=PropertyChanged,
        NotifyOnSourceUpdated=True,
        NotifyOnValidationError=True,
        Mode=TwoWay}" /><TextBox Tag="Re-enter Password..."
                Name="HashCheck"
                Style="{StaticResource DefaultPasswordBox}" /></WrapPanel>

The first TextBox works fine and is validated based on it's length at the moment, but not too sure how I could cause a ValidationError on my EditVM Entity so that I can check for errors before submitting the information and saving it.