public void ApplyRules(string propertyName)
{
List <string> propertyErrors = Rules.ApplyRules((T)this, propertyName);
if (propertyErrors != null && propertyErrors.Count > 0)
{
if (Errors.ContainsKey(propertyName))
{
Errors[propertyName].Clear();
}
else
{
Errors[propertyName] = new List <string>();
}
Errors[propertyName].AddRange(propertyErrors);
}
else
{
Errors.Remove(propertyName);
}
OnErrorsChanged(propertyName);
}