Extjs中ComboBox二级联动操作例子(2)

引入命名空间：

using Coolite.Ext.Web;

#region 二级联动

        /// <summary>
        /// 绑定一级类别数据
        /// </summary>
        protected void ClassData()
        {
            StringBuilder strSql = new StringBuilder();
            strSql.AppendFormat("select class_id,class_name from market_skill_class");
            DataSet ds = ExecuteDataSet(strSql.ToString());
            ClassStore.DataSource = ds;
            ClassStore.DataBind();
        }

        /// <summary>
        /// 动态联动绑定小类数据
        /// </summary>
        protected void TypeData(string strCid)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.AppendFormat("select type_id,type_name from market_skill_type where class_id={0}",strCid);
            DataSet ds = ExecuteDataSet(strSql.ToString());
            TypeStore.DataSource = ds;
            TypeStore.DataBind();
        }

        /// <summary>
        /// 与前台互动JS事件
        /// </summary>
        [AjaxMethod]
        public void Resource_SelectedIndexChanged()
        {
            if (class_box.SelectedItem.Value != string.Empty)
            {
                this.TypeData(class_box.SelectedItem.Value);
            }
        }

        #endregion

好了，到目前为此主要核心代码完毕，看下效果图：

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