private void 移动联系人至ToolStripMenuItem_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e) { bool bSuccess = false; UserBLL udb = new UserBLL(); string sItemID = string.Empty; sItemID = chatListBox1.SelectSubItem.ID.ToString(); bSuccess = udb.ChangeGroup(e.ClickedItem.Tag.ToString(), sItemID); if (bSuccess) { MessageBox.Show("移动分组成功!"); main_Load(sender, e); } else { MessageBox.Show("移动分组失败!"); } }