首页 > 代码库 > Repeater实现数据绑定

Repeater实现数据绑定

Repeater基础在aspx文件中加入Repeater 控件,在<ItemTemplate></ItemTemplate>包含的范围里加入自己控制的代码,需要替换的变量使用<%# Eval("SellerName")%>;注意两侧的引号。.aspx:<asp:Repeater ID="SellerRpt" runat="server">     <ItemTemplate>         <li><a href=http://www.mamicode.com/<%# Eval("SellerName")%> target="_blank">             <%# Eval("ComName")%></a></li>     </ItemTemplate> </asp:Repeater> 对应的后台cs中,在页面加载处加入数据绑定的代码:protected void Page_Load(object sender, EventArgs e) {     if (!IsPostBack)     {         DataTable dt = SellerDA.GetTopHotSellers(9);         SellerRpt.DataSource = dt;         SellerRpt.DataBind();     } } aspx中"SellerName""ComName"为DataTable 中的列名。优化直接使用DataItem可减少Eval函数的执行步骤,优化页面解析时间:<%# ((DataRowView)Container.DataItem)["SellerName"]%>替换<%# Eval("SellerName")%><%--其他绑定方法,可以对没有列明如数组进行绑定--%>
<%#Container.DataItem %><%--绑定格式等--%>


<%#Eval("times","{0:yyyy-MM-dd}")%>
<%#Eval("times","{C:货币}")%>


ArrayList数据源如果数据源是ArrayList,并且ArrayList为一列string数组,则可不用写出列名:.aspx:
<asp:Repeater ID="topAdHintRpt" runat="server"> <ItemTemplate> <asp:Label ID="BarLabel" CssClass="bar" runat="server" Text="|"></asp:Label> <a href=http://www.mamicode.com/"#"><span> <%#Container.DataItem%></span></a> </ItemTemplate> </asp:Repeater> .cs: ArrayList alterText; AdDA.GetIndexTopList(out alterText); topAdHintRpt.DataSource = alterText; topAdHintRpt.DataBind(); 处理后显示某些情况下,数据库中检索出来的数据并不适合直接显示出来,想要适当处理后显示(eg:日期的格式,字符串长度的控制),可使用标签来占位,在onitemdatabound函数中自行控制:.aspx: <asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="ProRpt_ItemDataBound"> <ItemTemplate> <asp:Label ID="colinDate" runat="server" Text=""></asp:Label> </ItemTemplate> </asp:Repeater> .cs:protected void ProRpt_ItemDataBound(object sender, RepeaterItemEventArgs e) { if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { DataRowView rowv = (DataRowView)e.Item.DataItem;//找到分类Repeater关联的数据项 string strDate = rowv["clDate"].ToString(); Label DateLB = e.Item.FindControl("colinDate") as Label; DateLB.Text = strDate.Substring(0, 10); } } 嵌套Reapeter的显示对于某些复杂的显示逻辑,需用用到Reapeter的嵌套,这里需要自行控制2层数据源的数据绑定:.aspx:<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="ProRpt_ItemDataBound"> <ItemTemplate> <asp:Repeater ID="ParaRpt" runat="server" OnItemDataBound="ParaRpt_ItemDataBound"> <ItemTemplate> <asp:Label ID="bar" CssClass="bar" runat="server" Text="|"></asp:Label> <span class="para"> <%# Eval("Name")%>: <%# Eval("Value")%></span> </ItemTemplate> </asp:Repeater> </ItemTemplate> </asp:Repeater> .cs:protected void ProRpt_ItemDataBound(object sender, RepeaterItemEventArgs e) { //判断里层repeater处于外层repeater的哪个位置( AlternatingItemTemplate,FooterTemplate, //HeaderTemplate,,ItemTemplate,SeparatorTemplate if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { Repeater rep = e.Item.FindControl("ParaRpt") as Repeater;//找到里层的repeater对象 DataRowView rowv = (DataRowView)e.Item.DataItem;//找到分类Repeater关联的数据项 string str = Convert.ToString(rowv["Pro_Content"]); //获取填充子类的内容 rep.DataSource = Product.FillPara(str); rep.DataBind(); } }

//三重绑定可以在二重绑定方法中加入事件
 rep.ItemDataBound += new RepeaterItemEventHandler(rpt_ItemDataBound);

转自:http://www.cnblogs.com/me115/archive/2011/04/09/2010682.html

Repeater实现数据绑定