private void detach_Files(File entity)
{
this.SendPropertyChanging();
entity.Extension = null;
}
private void attach_Files(File entity)
{
this.SendPropertyChanging();
entity.Extension = this;
}
partial void DeleteFile(File instance);
partial void UpdateFile(File instance);
partial void InsertFile(File instance);
private void attach_Files(File entity)
{
this.SendPropertyChanging();
entity.User = this;
}