Repeater控件使用小结持续更新

Repeater嵌套Repeater绑定数据

前台代码

 <!--注意层级关系不要写错了-->
 <asp:Repeater ID="rpGroup" runat="server"
         onitemdatabound="rpGroup_ItemDataBound">
         <HeaderTemplate>
             <table width="100%" border="0" cellspacing="0" cellpadding="0">
         </HeaderTemplate>
         <ItemTemplate>
             <tr>
                 <th>
                     第
                     <%#(int)Eval("groupNo")+1%>
                     批次
                 </th>
                 <th>金额：<label id="lblSumMoney" runat="server" ><%#Eval("SaleOrderMoneySum")%></label></th>
                 <th>单数：<label id="lblSumSaleOrder" runat="server" ><%#Eval("SaleOrderDzSum")%></label></th>
             </tr>
             <tr>
                 <th style="width: 8%">
                     销售单号
                 </th>
                 <th style="width: 13%">
                     客户名称
                 </th>

             </tr>
             <asp:Repeater ID="rpSaleOrderDz" runat="server">
                 <ItemTemplate>
                     <tr>
                         <td align="center">
                             <%#Eval("saleOrderCode")%>
                         </td>
                         <td align="center">
                             <%#Eval("sellerName")%>
                         </td>

                     </tr>
                 </ItemTemplate>
             </asp:Repeater>
         </ItemTemplate>
         <FooterTemplate>
             </table>
         </FooterTemplate>
     </asp:Repeater>

在PageLoad事件中，加载外层Repeter数据

 protected void Page_Load(object sender, EventArgs e)
 {
     var datas = JsonConvert.DeserializeObject<List<ResponseViewSaleOrderDzLstModel>>(strJson);
                 rpGroup.DataSource = datas;
                 rpGroup.DataBind();
 }

最后一步根据外层绑定的数据找到对应的内层数据

后台代码：这块需要绑定外层Repeater的ItemDataBound事件

 //网上资料用到了DataRowView我这里没用到直接绑定了数据集
 protected void rpGroup_ItemDataBound(object sender, RepeaterItemEventArgs e)
     {
         if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
         {
             Repeater rep = e.Item.FindControl("rpSaleOrderDz") 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
             //int groupNo = Convert.ToInt32(rowv["qtid"]); //获取组号
             rep.DataSource = datas[e.Item.ItemIndex].datas;//datas[groupNo].datas;
             rep.DataBind();
         }
     }

Repeater获取HeaderTemplate、FooterTemplate中的控件

Repeater中FooterTemplate并无FindControl方法，也无法将FooterTemplate转成RepeaterItem，

虽然在Repeater的ItemDataBound事件中，RepeaterItemEventArgs参数用if (e.Item.ItemType == ListItemType.Footer)可判别出这个Footer，但其他时候不行。

可通过如下代码进行文本的赋值：

<label ID="rep2Sum" runat="server" />

((HtmlGenericControl)rep2.Controls[rep2.Controls.Count - ].FindControl("rep2Sum")).Text = ss.ToString(); 

同理HeaderTemplate：

((HtmlGenericControl)rep2.Controls[0].FindControl("rep2Sum")).Text = ss.ToString(); 

Repeater实现行上下移动

前端

<asp:Repeater ID="rpNews" runat="server" OnItemCommand="rpNews_ItemCommand" OnItemDataBound="rpNews_ItemDataBound">
                                    <ItemTemplate>
                                        <tr>
                                            <td><%#Eval("menu_name") %></td>
                                            <td><%#Eval("menu_url") %>
                                                <asp:HiddenField ID="zindex" runat="server" Value=<%# Container.ItemIndex%> />
                                            </td>
                                            <td class="gradeX">
                                                <a  class="btn btn-primary" href="UpDateMenu.aspx?action=update&oid=<%# Eval("OID") %>&menuName=<%# Eval("menu_name") %>">修改</a>
                                                <a ID="btnDelete" href="MenuHandler.ashx?action=delete&oid=<%# Eval("OID") %>" OnClick="return IsConfirmDelete();" class="btn btn-primary">删除</a>
                                                <asp:LinkButton runat="server" ID="linkUp" CommandArgument='<%# Eval("OID") %>' CommandName='<%# Eval("menuorder") %>' OnClick="lbUp_Click"  Text="上移" CssClass="btn btn-primary"></asp:LinkButton>
                                                <asp:LinkButton runat="server" ID="linkDown" CommandArgument='<%# Eval("OID") %>' Text="下移" CommandName='<%# Eval("menuorder") %>' OnClick="lbDown_Click" CssClass="btn btn-primary"></asp:LinkButton>
                                            </td>
                                        </tr>
                                    </ItemTemplate>
                                </asp:Repeater>

后端：

 　　　　public int datacount = ;
        protected void rpNews_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                LinkButton linkUp = e.Item.FindControl("linkUp") as LinkButton;
                LinkButton linkDown = e.Item.FindControl("linkDown") as LinkButton;
                if (e.Item.ItemIndex == )
                {
                    linkUp.Enabled = false;
                }
                if (e.Item.ItemIndex == datacount - )
                {
                    linkDown.Enabled = false;
                }
            }
        }

protected void lbUp_Click(object sender, EventArgs e)
        {
            MenuUCService uc = new MenuUCService();
            LinkButton btn = (LinkButton)sender;
            HiddenField hf = (HiddenField)btn.NamingContainer.FindControl("zindex");
　　　　　　　　//先修改自己在修改其他
            StringBuilder strSql = new StringBuilder();
            //拿到当前行的上一行的Link数据
            LinkButton linkCurrentRow = (LinkButton)rpNews.Items[int.Parse(hf.Value)].FindControl("linkUp");
            if (!uc.CheckCurrentRowValueRange(linkCurrentRow))
            {
                return;
            }
            LinkButton linkUpRow = (LinkButton)rpNews.Items[int.Parse(hf.Value) - ].FindControl("linkUp");

            //得到的menuorder-oid
            strSql.Append("update USR_ALLMENU set menuorder='" + linkUpRow.CommandName + "' where OID='" + linkCurrentRow.CommandArgument + "';");
            strSql.Append("update USR_ALLMENU set menuorder='" + linkCurrentRow.CommandName + "' where OID='" + linkUpRow.CommandArgument + "';");
　　　　　　　//重新绑定数据

        }
　　　　
        protected void lbDown_Click(object sender, EventArgs e)
        {
            MenuUCService uc = new MenuUCService();
            LinkButton btn = (LinkButton)sender;
            HiddenField hf = (HiddenField)btn.NamingContainer.FindControl("zindex");
            LinkButton linkCurrentRow = (LinkButton)rpNews.Items[int.Parse(hf.Value)].FindControl("linkDown");
            if (!uc.CheckCurrentRowValueRange(linkCurrentRow))
            {
                return;
            }
            LinkButton linkDown = (LinkButton)rpNews.Items[int.Parse(hf.Value) + ].FindControl("linkDown");
            StringBuilder strSql = new StringBuilder();
            strSql.Append("update USR_ALLMENU set menuorder='" + linkDown.CommandName + "' where OID='" + linkCurrentRow.CommandArgument + "';");
            strSql.Append("update USR_ALLMENU set menuorder='" + linkCurrentRow.CommandName + "' where OID='" + linkDown.CommandArgument + "';");
　　　　　　　　//重新绑定数据

        }

原理：找到相邻行，然后获取ID和排序方式，然后修改

参考自：http://www.cnblogs.com/webapi/p/5718445.html