嵌套中继器上的 ItemCommand

Question

我有一个简单的 aspx 页面，其中包含 2 个嵌套转发器。每个上面都有按钮。当用户单击外部中继器上的按钮时，我可以在代码隐藏中捕获 ItemCommand，但是当用户单击内部中继器时，我无法捕获它。

我在其他线程中读到需要手动将事件附加到内部中继器，但无法解决。

谁能帮忙？

这里是aspx。我在后面使用 vb.net 代码

<asp:Repeater runat="server" ID="ParentRepeater">
   <ItemTemplate>
        <li id="P<%#DataBinder.Eval(Container, "DataItem.id")%>">
            <%#DataBinder.Eval(Container, "DataItem.name")%>
            <asp:Button runat="server" ID="adedit" Text="Edit" CommandName='<%#DataBinder.Eval(Container, "DataItem.id")%>'
                class="pages-edit" />
            <asp:Button runat="server" ID="addel" Text="Delete" CommandName='<%#DataBinder.Eval(Container, "DataItem.xid")%>'
                class="pages-delete" />
            <ul class="page-section sub innerdrag">
                <asp:Repeater runat="server" ID="childrepeater">
                    <ItemTemplate>
                        <li id="<%#DataBinder.Eval(Container, "DataItem.id")%>,">
                            <%#DataBinder.Eval(Container, "DataItem.name")%><asp:Button runat="server" ID="ad_edit"
                                Text="Edit" CommandName='<%#DataBinder.Eval(Container, "DataItem.id")%>' class="pages-edit" />
                            <asp:Button runat="server" ID="ad_del" Text="Delete" CommandName='<%#DataBinder.Eval(Container, "DataItem.xid")%>'
                                class="pages-delete" />
                        </li>
                    </ItemTemplate>
                </asp:Repeater>
            </ul>
        </li>
    </ItemTemplate>
</asp:Repeater>

仍然没有触发，所以我也将更新后的 VB 放在这里

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            Dim DBFunctions As New DBFunctions.Functions
            Dim dstmp As New DataSet
            Dim dstmp2 As New DataSet
            dstmp = DBFunctions.SQLDataSet("SELECT id,name, 'x'+cast(id as varchar(50)) as xid from pages where parent = 0 and coalesce(active,1)=1 order by orderby asc", "data")
            dstmp2 = DBFunctions.SQLDataSet("SELECT id,name , 'x'+cast(id as varchar(50)) as xid,parent from pages where parent >0 and coalesce(active,1)=1 order by orderby asc", "data2")
            Dim allData As New DataSet
            allData.Tables.Add(dstmp.Tables(0).Copy)
            allData.Tables.Add(dstmp2.Tables(0).Copy)
            allData.Relations.Add(New DataRelation("Children", allData.Tables(0).Columns("ID"), allData.Tables(1).Columns("parent")))
            ParentRepeater.DataSource = allData
            ParentRepeater.DataBind()
            sdhfunctions.Close()
        End If
    End Sub

    Protected Sub repMenu1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles ParentRepeater.ItemDataBound
        Dim dv As DataRowView = TryCast(e.Item.DataItem, DataRowView)
        If dv IsNot Nothing Then
            Dim repSubMenu As Repeater = TryCast(e.Item.FindControl("childrepeater"), Repeater)
            If repSubMenu IsNot Nothing Then
                AddHandler repSubMenu.ItemCommand, AddressOf childrepeater_ItemCommand
                repSubMenu.DataSource = dv.CreateChildView("Children")
                repSubMenu.DataBind()
            End If
        End If

    End Sub
    Protected Sub ParentRepeater_ItemCreated(ByVal sender As Object, ByVal e As RepeaterItemEventArgs) Handles ParentRepeater.ItemCreated
        Dim dv As DataRowView = TryCast(e.Item.DataItem, DataRowView)
        If dv IsNot Nothing Then
            Dim repSubMenu As Repeater = TryCast(e.Item.FindControl("childrepeater"), Repeater)
            If repSubMenu IsNot Nothing Then
                AddHandler repSubMenu.ItemCommand, AddressOf childrepeater_ItemCommand
                repSubMenu.DataSource = dv.CreateChildView("Children")
                repSubMenu.DataBind()
            End If
        End If

    End Sub

    Protected Sub childrepeater_ItemCommand(ByVal source As Object, ByVal e As RepeaterCommandEventArgs)
        Dim stophere As String = ""
    End Sub

我在 stophere 上放了一个断点，它永远不会被命中。

对不起，我真的很困惑:(

Answer 1

试试这个：

Protected Sub ParentRepeater_ItemCreated(ByVal sender As Object, ByVal e As RepeaterItemEventArgs) Handles ParentRepeater.ItemCreated
    Dim childRepeater As Repeater = DirectCast(e.Item.FindControl("childrepeater"), Repeater)
    AddHandler childRepeater.ItemCommand, AddressOf childrepeater_ItemCommand
    childRepeater.DataSource = "the data source for childRepeater"
    childRepeater.DataBind()
End Sub

Protected Sub childrepeater_ItemCommand(ByVal source As Object, ByVal e As RepeaterCommandEventArgs)

End Sub