Question

我在表单视图中有一个html表。我把它设为runat =＆＃34; server＆＃34;但在服务器端，id-tblDemandData无法访问它。我的代码是 -

<asp:FormView ID="DemandDataView" runat="server">
    <ItemTemplate>
        <div id="DemandDataDIV" runat="server" visible="true">
            <asp:Button Text="exportBtn" runat="server" ID="btnExport" OnClick="btnExport_Click" />
            <hr />
            <div class="headingtext" runat="server" id="tblDiv" style="width: 100%; margin-bottom: 10px;"><%= LocalString("DemandDataText")%></div>
            <table border="0" runat="server" id="tblDemandData" cellpadding="3" cellspacing="0" class="tabletext">
                <tr>
                    <td class="tabletextbold" style="width: 240px;text-align:right"></td>
                    <td class="tabletextbold" style="width: 151px;text-align:right"><%= LocalString("PhaseAText")%></td>
                    <td class="tabletextbold" style="width: 240px;text-align:right"><%= LocalString("PhaseBText")%></td>
                    <td class="tabletextbold" style="width: 151px; text-align: right"><%= LocalString("PhasecText")%></td>

                    <td class="tabletextbold" style="width: 240px;text-align:right">Total</td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("VoltageABText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstantaneousVoltagePhaseAB", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px; text-align: right"><%= LocalString("NAText") %></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("VoltageBCText") %></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>
                    <td style="width: 240px;text-align:right"><%# Eval("InstantaneousVoltagePhaseBC", "{0:N4}")%></td>
                    <td style="width: 151px; text-align: right"><%= LocalString("NAText") %></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("VoltageCAText") %></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px; text-align: right"><%# Eval("InstantaneousVoltagePhaseCA", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("VoltageAngleABText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstantaneousVoltagePhaseAB", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px; text-align: right"><%= LocalString("NAText") %></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("VoltageAngleBCText") %></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>
                    <td style="width: 240px;text-align:right"><%# Eval("InstantaneousVoltagePhaseBC", "{0:N4}")%></td>
                    <td style="width: 151px; text-align: right"><%= LocalString("NAText") %></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("VoltageAngleCAText") %></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px; text-align: right"><%# Eval("InstantaneousVoltagePhaseCA", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("VoltageHarmonicdistorsionText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstantaneousVoltageHarmonicDistortionPhaseA", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("InstantaneousVoltageHarmonicDistortionPhaseB", "{0:N4}")%></td>
                    <td style="width: 151px; text-align: right"><%# Eval("InstantaneousVoltageHarmonicDistortionPhaseC", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("CurrentHarmonicdistorsionText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("IharmPhaseAPV", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("IharmPhaseBPV", "{0:N4}")%></td>
                    <td style="width: 151px; text-align: right"><%# Eval("IharmPhaseCPV", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("DistorsionPowerText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstantaneousDistorsivePowerPhaseA", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("InstantaneousDistorsivePowerPhaseB", "{0:N4}")%></td>
                    <td style="width: 151px; text-align: right"><%# Eval("InstantaneousDistorsivePowerPhaseC", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("InstantaneousDistorsivePowerThreePhase", "{0:N4}")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("PowerFactorText") %></td>
                    <td style="width: 151px;"></td>
                    <td style="width: 240px;"></td>
                    <td style="width: 151px;"></td>

                    <td style="width: 240px;"></td>
                </tr>
                <tr>

                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("ActivePowerText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstActiveKWA1", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("InstActiveKWB1", "{0:N4}")%></td>
                    <td style="width: 151px; text-align: right"><%# Eval("InstActiveKWC1", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("instKW", "{0:N4}")%></td>
                </tr>
                <tr>

                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("ApparentVAText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("VAarithPhaseAPV", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("VAarithPhaseBPV", "{0:N4}")%></td>
                    <td style="width: 151px; text-align: right"><%# Eval("VAarithPhaseCPV", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("InstVArms", "{0:N4}")%></td>
                </tr>
                <tr>

                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("ApparentVAPFText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("instPFA1", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("instPFB1", "{0:N4}")%></td>
                    <td style="width: 151px;text-align:right"><%# Eval("instPFC1", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("PFinstAVA", "{0:N4}")%></td>
                </tr>
                <tr>

                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("ReactivePowerText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstVARA1", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("InstVARB1", "{0:N4}")%></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstVARC1", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("ArithmeticVARSysPV", "{0:N4}")%></td>
                </tr>

                <tr>

                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("ReactiveVARPFText") %></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>

                    <td style="width: 240px;text-align:right"><%# Eval("PFinstAVAR", "{0:N4}")%></td>
                </tr>
                <tr>

                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("PhaseorVAText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("PVAPhaseAPV", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("PhaseAPVBI", "{0:N4}")%></td>
                    <td style="width: 151px;text-align:right"><%# Eval("PVAPhaseCPV", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("instVA", "{0:N4}")%></td>
                </tr>
                <tr>

                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("PhaseorVAPFText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstantaneousCosinePhaseA", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("InstantaneousCosinePhaseA", "{0:N4}")%></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstantaneousCosinePhaseA", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("InstantaneousCosineThreePhase", "{0:N4}")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("PhaseorVARText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("VARPhaseAPV", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("VARPhaseBPV", "{0:N4}")%></td>
                    <td style="width: 151px;text-align:right"><%# Eval("VARPhaseCPV", "{0:N4}")%></td>

                    <td style="width: 240px;text-align:right"><%# Eval("InstVARTimeDelay", "{0:N4}")%></td>
                </tr>

                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("PhaseorVARPFText") %></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>

                    <td style="width: 240px;text-align:right"><%# Eval("PFinstPVAR", "{0:N4}")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("PFAngleText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("PFanglePhaseAPV", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%# Eval("PFanglePhaseBPV", "{0:N4}")%></td>
                    <td style="width: 151px;text-align:right"><%# Eval("PFanglePhaseCPV", "{0:N4}")%></td>   

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("FrequencyText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("InstFREQ", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>

                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                </tr>
                <tr>
                    <td class="tabletextbold" style="width: 240px;"><%= LocalString("TempratureText") %></td>
                    <td style="width: 151px;text-align:right"><%# Eval("temperature", "{0:N4}")%></td>
                    <td style="width: 240px;text-align:right"><%= LocalString("NAText")%></td>
                    <td style="width: 151px;text-align:right"><%= LocalString("NAText") %></td>  

                    <td style="width: 240px;text-align:right">
                        <%= LocalString("NAText")%>
                    </td>
                </tr>
            </table>
        </div>
    </ItemTemplate>
</asp:FormView>

请帮我解决我的错误。

Answer 1

您需要通过FromView访问其ItemTemplate

中的控件

 HtmlTable table = (HtmlTable)DemandDataView.FindControl("tblDemandData");

Answer 2

有两个选项 -

选项1.（最推荐） - 您可以尝试使用Html agility pack API来解析html文本。HTML Agility Pack

选项2.使用String Builder将func queue() -> SnapOperationQueue { switch self { case .Highest: return SnapOperationQueue(queue: .Highest) case .High: return SnapOperationQueue(queue: .High) case .Normal: return SnapOperationQueue(queue: .Normal) case Low: return SnapOperationQueue(queue: .Low) default: return self } }代码附加到String Builder变量并将其传递给html代码。样品在下面 - Pass Html Table to Aspx With String Builder

Answer 3

如前所述，您应该在表的父控件上使用FindControl（＆＃34; YourControlID＆＃34;）。请注意，FindControl只能在第一级子控件中迭代，就像我记得的那样..

Answer 4

这对我有用，请检查一下..

只需在代码<asp:TemplateField>的顶部添加<itemtemplate>。

服务器端无法访问html表。 asp.net

4 个答案: