练习CUAO-OnLineShop项目的学习笔记-Repeater嵌套使用

最新推荐文章于 2022-10-12 14:08:41 发布

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本文介绍如何在 ASP.NET 中使用 Repeater 控件进行数据绑定，特别是嵌套 Repeater 的实现方式。通过示例代码展示了如何设置 ItemDataBound 事件来控制内嵌 Repeater 的数据加载时机。

前台

<div>
                        <asp:Repeater ID="Repeater1" runat="server" 
                            onitemdatabound="Repeater1_ItemDataBound">
                          <ItemTemplate>
                            <div style=" text-align:left"><img alt="" width="9" height="7" src="images/body/orange-bullet.gif">
                                <a href="IndexPage.aspx?pid="+'<%# Eval("ID") %>'>
                                    <font color="#FF4800">
                                    <strong><%# Eval("Name") %></strong>
                                    </font>
                                </a>
                            </div>
                            <asp:Repeater ID="reItem" runat="server">
                                <ItemTemplate>
                                    <div>
                                        <a href="IndexPage.aspx?id="+'<%# Eval("ID") %>'><%# Eval("Name") %></a>
                                        <font color="ff6600"><b>|</b></font>
                                        <a href="IndexPage.aspx?id="+'<%# Eval("ID") %>'><%# Eval("Name") %></a>
                                    </div>
                                </ItemTemplate>
                            </asp:Repeater>
                        </ItemTemplate>
                      </asp:Repeater>

<div>

后台数据绑定

1.先声明外层Repeater的ItemDataBound事件；

2.在该事件中判断在绑定类型为Item或者AlternatingItem时（(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
绑定里面Repeater的值

//在Repeater1即父类被夹在时激发该事件
        protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            //如果是嵌套的Repeater的ItemTemplate或者AlternatingItemTemplate时
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                Repeater itemRp=(Repeater)e.Item.FindControl("reItem");
                itemRp.DataSource = new MasterBLL().getCategory(2);
                itemRp.DataBind();
            }
        }