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;
}
