public override ValidationResult Validate( object value, CultureInfo culture ) { SourceDataConverter converter = new SourceDataConverter( m_sourceSupportDBNull ); Exception exception; converter.TryConvertBack( value, m_targetType, CultureInfo.InvariantCulture, culture, out exception ); if( exception != null ) return new ValidationResult( false, exception.Message ); return ValidationResult.ValidResult; }
internal IValueConverter GetBindingConverter( object sourceItem ) { if( !m_initialized ) throw new InvalidOperationException( "An attempt was made to apply a binding to a DataGridItemProperty that has not be added to the ItemProperties collection." ); if( m_bindingConverter == null ) { if( m_converter != null ) { m_bindingConverter = m_converter; } else { m_bindingConverter = new SourceDataConverter( ItemsSourceHelper.IsItemSupportingDBNull( sourceItem ), CultureInfo.InvariantCulture ); } } return m_bindingConverter; }