private void DelUserAuth()
{
List <UserAuth> userauths = new List <UserAuth>();
List <Authority> checkauth = nodesTools.GetUserNode <Authority>(tree_user.Nodes);
foreach (Authority auth in checkauth)
{
UserAuth userAuth = new UserAuth {
AuthID = auth.id, UserID = int.Parse(txblist_user.Tag.ToString())
};
userauths.Add(userAuth);
}
authorityService.DeleteUserAuth(userauths, txblist_user.Tag.ToString());
SelectUser();
}