在前段时间我做两个  listbox  之间传值或是参数，选择其中某几项传到另外一个  listbox  中。当时在网上搜集了好多这样的列子，可是都不是很完美的，而且代码需要写很多很多，效果实现的也不是很好！

       经过我个人研究之后，我总结到一个好的办法，其实这个办法运用到  dropdownlist  或是别的只要有  items  中的都可以运用，给大家提供一个思路或是灵感：

protected DateTime ShowTime;
        public string constr;
        public string constr_xxzx;
        protected string strshuizha;
        public string strdata;
        public string strzhazhan;
        public string strzzname;
        public int sum;
        protected string url;
        System.Data.DataTable myDataTable;
        protected System.Data.DataTable dt;
        protected void Page_Load(object sender, EventArgs e)
        {
            constr = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            constr_xxzx = System.Configuration.ConfigurationSettings.AppSettings.Get("sz_xxzx");
            if (!(Page.IsPostBack))
            {
                //给  ddlzz  绑定数据
                bindDdzz();
                //给  SourceFile
                addsfile();
                //给默认文本填写
                addcontent();
            }
           
        }

        private void CreateTb()
        {
            //dt =new System.Data.DataTable();
            //dt.Columns.Add(new DataColumn("序号", typeof(System.String)));
            //for (int i = 0; i < TargetFile.Items.Count; i++)
            //{
            //    string strtf = TargetFile.Items[i].Text;
            //    dt.Columns.Add(new DataColumn(strtf, typeof(System.String)));
            //}
            //strshuizha = "select ";
            //for (int i = 0; i < TargetFile.Items.Count; i++)
            //{
            //    if (i == TargetFile.Items.Count - 1)
            //    {
            //        strshuizha += TargetFile.Items[i].Value;
            //    }
            //    else
            //    {
            //        strshuizha += TargetFile.Items[i].Value + ",";
            //    }
            //}
            //strshuizha += " from dataset where TIME_STAMP >=" + Convert.ToDateTime(tbxprevious.Text) + " and TIME_STAMP <=" + Convert.ToDateTime(tbxnext.Text) + " order by TIME_STAMP desc";
            //System.Data.DataTable dtTemp = (new LOGIC.DataAccessOra(constr_xxzx)).RunOracleDT(strshuizha);
            //if (dtTemp.Rows.Count != 0)
            //{
            //    for (int i = 0; i < dtTemp.Rows.Count; i++)
            //    {
            //        for (int j = 0; j < TargetFile.Items.Count; j++)
            //        {
            //            dt.Rows[i][j + 1] = dtTemp.Rows[i][j].ToString();
            //        }
            //    }
            //    for (int i = 0; i < dtTemp.Rows.Count; i++)
            //    {
            //        dt.Rows[i][0] = Convert.ToString(i + 1);
            //    }
            //}
        }

//--------------------------------------------Mondify By LiFuyun------------------------------------------------------------//
        /// <summary>
        /// 数据绑定
        /// </summary>
        private void Binddata()
        {
            //GridView1.DataKeyNames = new string[] { "序号" };
            //GridView1.DataSource = dt;
            //GridView1.DataBind();
        }

        /// <summary>
        /// 添加默认的时间段、标题、备注等
        /// </summary>
        private void addcontent()
        {
            ShowTime = DateTime.Now;
            tbxprevious.Text = ShowTime.Year.ToString() + "-" + ShowTime.Month.ToString() + "-" + ShowTime.Day.ToString() + " 00:00:00";
            tbxnext.Text = ShowTime.ToString();
            tbxtitle.Text = ddlzz.SelectedItem.Text + "时间段详细表";
            tbxbz.Text = "时间是从" + tbxprevious.Text + "至" + tbxnext.Text + "闸站详细数据情况表";
        }

        /// <summary>
        /// 给  DropDownList  闸站点绑定数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void bindDdzz()
        {
            string str = "select STATION_ID,水闸名称 from BS_SHUIZ2";
            SqlConnection sqlconn = new SqlConnection(constr);
            SqlDataAdapter myda = new SqlDataAdapter(str, sqlconn);
            DataSet ds = new DataSet();
            myda.Fill(ds, "BS_SHUIZ2");
            ddlzz.DataSource = ds.Tables["BS_SHUIZ2"].DefaultView;
            ddlzz.DataTextField = "水闸名称";
            ddlzz.DataValueField = "STATION_ID";
            ddlzz.DataBind();
        }

        /// <summary>
        /// 给  SourceFiled  的  listbox  加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void addsfile()
        {
            string str1 = "select ziduan,name from BS_zhaidduizhao";
            SqlConnection sqlconn1 = new SqlConnection(constr);
            SqlDataAdapter myda1 = new SqlDataAdapter(str1, sqlconn1);
            DataSet ds1 = new DataSet();
            myda1.Fill(ds1, "BS_zhaidduizhao");
            SourceFile.DataSource = ds1.Tables["BS_zhaidduizhao"].DefaultView;
            SourceFile.DataTextField = "name";
            SourceFile.DataValueField = "ziduan";
            SourceFile.DataBind();
        }
        /// <summary>
        /// 全部添加
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void addall_Click(object sender, EventArgs e)
        {
            foreach (ListItem item in SourceFile.Items)
            {
                TargetFile.Items.Add(item);
                item.Selected = false;
            }
            foreach (ListItem item in TargetFile.Items)
            {
                SourceFile.Items.Remove(item);
            }
        }
        /// <summary>
        /// 全部去掉
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void plusall_Click1(object sender, EventArgs e)
        {
            foreach (ListItem item in TargetFile.Items)
            {
                SourceFile.Items.Add(item);
                item.Selected = false;
            }
            foreach (ListItem item in SourceFile.Items)
            {
                TargetFile.Items.Remove(item);
            }
        }
        /// <summary>
        /// 添加选中项
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void addselected_Click(object sender, EventArgs e)
        {
            foreach (ListItem item in SourceFile.Items)
            {
                if (item.Selected == true)
                {
                    TargetFile.Items.Add(item);
                    item.Selected = false;
                }
            }
            foreach (ListItem item in TargetFile.Items)
            {
                SourceFile.Items.Remove(item);
            }
        }
        /// <summary>
        /// 去掉选择项
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void plusselected_Click(object sender, EventArgs e)
        {
            foreach (ListItem item in TargetFile.Items)
            {
                if (item.Selected == true)
                {
                    SourceFile.Items.Add(item);
                    item.Selected = false;
                }
            }
            foreach (ListItem item in SourceFile.Items)
            {
                TargetFile.Items.Remove(item);
            }
        }

//------------------------------------------------END--------------------------------------------------------------------//