private void Complete_Click(object sender, RoutedEventArgs e) { List <string> users = new List <string>(); foreach (TreeViewItem b in departmentTree.Items) { foreach (CheckBox d in b.Items) { if (d.IsChecked == true) { users.Add(d.Name); } } } users.Add(selfusername); GroupBLL bll = new GroupBLL(); int id = bll.CreatGroup(users, GroupName.Text); Group group = null; bll.GetGroupByID(id, out group); if (group != null) { OneToManyWindow onetomany = new OneToManyWindow(group, user); onetomany.Show(); this.Close(); } else { MessageBox.Show("系统异常,建群失败"); } }