Question

我已经在整个网络上寻找类似的情况并且不能，请帮助我这件事让我疯了。

好的我要做的是在这些内部嵌套ListView和按钮，后面的代码无法看到嵌套listview中单击的按钮，例如。我有很多listview组需要留下来。如果我做1 listview父（按钮可以看到和工作）。它的父母 - ＆gt;孩子 - ＆gt;孩子（这里的按钮无法看到）这就是问题发生的地方。

所有数据都是正确的，列表视图分组都只是那个该死的按钮。

一些ASP代码提前为缩进道歉。

<asp:ListView ID="lvSOLGrpDelAdd" runat="server" ItemPlaceholderID="plcSOLGrpAdd">
<LayoutTemplate>
    <table class="tblDespPackSOL">
        <tr class="tblDespPackSOLH">
        <td>O/N/L</td>       
        <td>Qty</td>
        <td>Code</td>
        <td>Description 1</td>
        <td>Description 2</td>
        <td>Unit Cost</td>
        <td>Total</td>
        <td>Qty Desp</td>
        <td>Allocate</td>
    </tr>

    <asp:PlaceHolder ID="plcSOLGrpAdd" runat="server" />
</table>
</LayoutTemplate>
<ItemTemplate>
<tr class="tblDespPackSOLAdd">
   <td colspan="9"><%# Eval("Name") %>, <%# Eval("A1")%>, <%# Eval("A2")%>, <%# Eval("TownCity")%>, <%# Eval("CountyState")%>,<%# Eval("Country")%>, <%# Eval("PostCodeZip")%></td>
</tr>

<asp:ListView runat="server" ID="lvSOLGrpDelMeth" OnItemDataBound="lvSOLGrpDelMeth_RowDataBound">
<ItemTemplate>

<tr class="tblDespPackSOLDelMeth">
    <td colspan="9">DELIVERY METHOD -->> <%# Eval("DescDelivMethod") %></td>
</tr>
<asp:ListView runat="server" ID="lvSOL" DataKeyNames="SalesOrderLine" OnItemDataBound="lvSOL_RowDataBound">
<ItemTemplate>
    <tr id="trSOL" runat="server" class="tblDespPackSOLNorm">
        <td>
            <asp:HiddenField ID="hdnSOL" runat="server" Value='<%# Eval("SalesOrderLine") %>' />
<%# Eval("SalesOrderLine") %></td>
<td><%# Eval("Qty") %></td>
<td><%# Eval("Code") %></td>
<td><%# Eval("Desc1") %></td>
<td><%# Eval("Desc2") %></td>
<td><%# Eval("Symbol") %><%# Eval("CombUnitPrice") %></td>
<td><%# Eval("Symbol")%><%# Eval("Total") %></td>
<td><asp:DropDownList ID="lstQtyAvail" runat="server" CssClass="FTxtLst" AutoPostBack="true" Width="40px" /></td>
<td>
<asp:Button ID="btnAllocateLine" runat="server" CssClass="FBtn" Text="Allocate" CommandName="Click" CommandArgument='<%# Eval("SalesOrderLine") %>' OnClick="btnAllocateLine_Click" /></td>
</tr>
</ItemTemplate>
</asp:ListView>

</ItemTemplate>
</asp:ListView>

</ItemTemplate>
</asp:ListView>

以下是

背后的一些vb代码

Protected Sub btnAllocateLine_Click(sender As Object, e As EventArgs)
   MsgBox("If this pops up its tells me it works and it is not at all")
   'If I try Handles btnAllocateLine.Click its tells me I need With Events
End Sub

Protected Sub Packing_Load(sender As Object, e As EventArgs) Handles Me.Load
    FuncUsers_Get()
    hdnIDSO.Value = tblUsers.IDOrder
    hdnIDUser.Value = tblUsers.ID

    lvSOLGrpDelAdd.DataSource = tblDespatchA.DespatchPackSOLGrpDelAdd_Get(IDSO:=hdnIDSO.Value)
    lvSOLGrpDelAdd.DataBind()

End Sub

Protected Sub lvSOLGrpDelAdd_RowDataBound(sender As Object, e As ListViewItemEventArgs) Handles lvSOLGrpDelAdd.ItemDataBound
    Dim lvSOLGrpDelMeth As ListView = DirectCast(e.Item.FindControl("lvSOLGrpDelMeth"), ListView)
    lvSOLGrpDelMeth.DataSource = tblDespatchA.DespatchPackSOLGrpDelMeth_Get(IDSO:=hdnIDSO.Value, IDGrpDelAdd:=DataBinder.Eval(e.Item.DataItem, "IDGrpDelAdd"))
    lvSOLGrpDelMeth.DataBind()
End Sub


Protected Sub lvSOLGrpDelMeth_RowDataBound(sender As Object, e As ListViewItemEventArgs)
    Dim lvSOL As ListView = DirectCast(e.Item.FindControl("lvSOL"), ListView)
    lvSOL.DataSource = tblDespatchA.DespatchPackSOL_Get(IDSO:=hdnIDSO.Value, IDGrpDelAdd:=DataBinder.Eval(e.Item.DataItem, "IDGrpDelAdd").ToString, IDGrpDelMeth:=DataBinder.Eval(e.Item.DataItem, "IDGrpDelMeth").ToString)
    lvSOL.DataBind()
End Sub

Answer 1

尝试使用lvSOL_RowDataBound事件处理程序中的AddHandler连接事件：

Protected Sub lvSOL_RowDataBound(sender As Object, e As ListViewItemEventArgs)

    Dim btnAllocateLine As Button = CType(e.Item.FindControl("btnAllocateLine"), Button)

    AddHandler btnAllocateLine.Click, AddressOf btnAllocateLine_Click

End Sub

Answer 2

为了上帝的缘故。我自己修好了。对于任何有类似问题的人来说，答案就是滚筒！回发问题。

我的加载代码绑定数据，但是每次单击任何按钮都会导致回发，即使我将AutoPostBack =“False”，还有ChildrenAsTriggers =“false”和UpdateMode =“Conditional”，它仍然会回发。因此，每次单击一个按钮时，都会重新绑定并在按钮事件被触发时为所有子项构建父Listview。

简单修复只是确保页面加载事件仅在页面加载而不是回发时触发。所以下面添加IsPostBack = False，下面的工作示例。

Protected Sub Packing_Load(sender As Object, e As EventArgs) Handles Me.Load
FuncUsers_Get()
hdnIDSO.Value = tblUsers.IDOrder
hdnIDUser.Value = tblUsers.ID

If IsPostBack = False Then
lvSOLGrpDelAdd.DataSource =   tblDespatchA.DespatchPackSOLGrpDelAdd_Get(IDSO:=hdnIDSO.Value)
lvSOLGrpDelAdd.DataBind()
End If

End Sub

嵌套Listview，事件处理程序内的按钮不起作用

2 个答案: