private void TreeBind(string strWhere) { BLL.users.user_groups bll = new BLL.users.user_groups(); DataTable dt = bll.GetList(0, strWhere, "id desc").Tables[0]; this.ddlGroupId.Items.Clear(); this.ddlGroupId.Items.Add(new ListItem("所有会员组", "")); foreach (DataRow dr in dt.Rows) { this.ddlGroupId.Items.Add(new ListItem(dr["title"].ToString(), dr["id"].ToString())); } }