private void detach_tblFileExtensions(tblFileExtension entity)
 {
     this.SendPropertyChanging();
     entity.tlkpFileExtensionType = null;
 }
 partial void UpdatetblFileExtension(tblFileExtension instance);
 partial void DeletetblFileExtension(tblFileExtension instance);
 partial void InserttblFileExtension(tblFileExtension instance);