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 (!this.IsSealed) { 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); }