public void SetBaseValue(object baseValue)
{
if (baseObserver != null)
{
baseObserver.SetBaseValue(baseValue);
}
else
{
observableValue.Value = baseValue;
ValueType = baseValue != null?baseValue.GetType() : null;
}
}
private void OnTargetVisualAncestorChanged(object sender, EventArgs e)
{
sourceExpression.SetBaseValue(Source ?? GetRelativeSource(Target, RelativeSource, ElementName));
}