asp.net - Asp:Repeater Datasouce - 中继器内的数据表复选框。删除当前行

Question

找不到类似的东西。该页面有一个Repeater，数据源是一个数据表。页面中的行被添加到数据表中，然后Repeater 被更新并显示在页面上。例如，用户添加了不正确的信息，需要通过在复选框中打勾来从中继器中删除某些内容。如果选中复选框，则应从数据源中删除所选数据（数据表中的一行）并更新Repeater。这如何实施以及是否有可能？我的代码：

<asp:UpdatePanel runat="server" ID="UpdatePanel1" UpdateMode="Conditional">

            <ContentTemplate>

                    <asp:Repeater ID="Repeater1" runat="server">

                        <ItemTemplate>

                                <asp:TableCell Width="80px" BackColor="#e3a99a"  HorizontalAlign="Right">
                                      <asp:CheckBox ID="cb_GetOut" runat="server" AutoPostBack="true" Checked="false" Text="DeleteRow" style="padding-right:5px" />
                                </asp:TableCell>

                        </ItemTemplate>

                    </asp:Repeater>

            </ContentTemplate>

        </asp:UpdatePanel>


Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        If Page.IsPostBack = False Then

            dtTest_add.Columns.AddRange(New DataColumn(3) {New DataColumn("text1"), New DataColumn("text2"), New DataColumn("text3"), New DataColumn("text4")})

            ViewState("dtTest_add") = dtTest_add

        Else

            dtTest_add = ViewState("dtTest_add")
            Repeater1.DataSource = TryCast(ViewState("dtTest_add"), DataTable)
            Repeater1.DataBind()

        End If

    End Sub


    Protected Sub btn_addTest_Click(sender As Object, e As System.EventArgs) Handles btn_addTest.Click

        dtTest_add.Rows.Add(txt1.Text, txt2.Text, txt3.Text, txt4.Text)

        dtTest_add = ViewState("dtTest_add")

        ViewState("dtTest_add") = dtTest_add
        Repeater1.DataSource = TryCast(ViewState("dtTest_add"), DataTable)
        Repeater1.DataBind()

        UpdatePanel1.Update()

    End Sub


    Protected Sub Repeater1_ItemCreated(sender As Object, e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles Repeater1.ItemCreated

        Dim cb_GO As CheckBox = CType(e.Item.FindControl("cb_GetOut"), CheckBox)
        ScriptManager.GetCurrent(Page).RegisterAsyncPostBackControl(cb_GO)

    End Sub


    Protected Sub Repeater1_ItemDataBound(sender As Object, e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles Repeater1.ItemDataBound

        Dim cb_GO As CheckBox = DirectCast(e.Item.FindControl("cb_GetOut"), CheckBox)

        cb_GO.Attributes("onclick") = "this.checked = (" + dtTest_add + ").deleteRow(" + CStr(e.Item.ItemIndex) + ");"

    End Sub

“btn_addTest”按钮位于不在Repeater 中的表单上。有了它，我将数据添加到数据源。然后更新中继器。

我在这行代码中处理“onclick”复选框事件

cb_GO.Attributes("onclick") = "this.checked = (" + dtTest_add + ").deleteRow(" + CStr(e.Item.ItemIndex) + ");"

有必要从数据表中删除数据，Repeater 将简单地更新。但是，你是怎么做的？无法通过 ItemDataBound 中的中继器访问数据表。

标签： asp.netvb.netcheckboxdatatableasprepeater