【1】使用xml数据源绑定数据

         /// <summary>

        /// 从MiddleCateGoryName.xml文件中读出数据添加到(中类别)下拉框中        /// </summary>        private void ReadMiddleCategoryXml()        {             DataTable dt = new DataTable();            DataSet ds = new DataSet();            if (File.Exists(strConfigFileUrl + "MiddleCateGoryName.xml"))            {                 ds.ReadXml(strConfigFileUrl + "MiddleCateGoryName.xml");                if (ds.Tables.Count < 1)                {                     return;                }                dt = ds.Tables[0];                cbxMiddleCategory.Items.Clear();                foreach (DataRow dr in dt.Rows)                {                     cbxMiddleCategory.Items.Add(dr["rightName"].ToString());

                }

            }

        }

 

【2】双击 该控件，获取该选择事件；

        private void cbxMiddleCategory_SelectedIndexChanged(object sender, EventArgs e)        {             if (cbxMiddleCategory.Items[Convert.ToInt32(cbxMiddleCategory.SelectedIndex)].ToString() != null)            {                 string strCategoryName = cbxMiddleCategory.Items[Convert.ToInt32(cbxMiddleCategory.SelectedIndex)].ToString(); //获取选择的值

             }

        }