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背景 - 在我们的项目中有一个Share Point 2013 Visual Web Part。它有4个嵌套的GridViews。点击一个图像按钮后，3个网格将被展开。人口也可以通过点击该图像按钮进行编码。但是，由于背面发生了反复，页面闪烁，所有网格都收缩。因此，我决定在第二个网格的项目模板内部保留一个更新面板。
问题 - 将它放在那里后，我能够停止页面闪烁。点击上面的图片按钮，不再回复了。但是，没有显示网格。一点都不我通过评论更新面板来查看是否获取数据。是的，我正在获取数据。它正在显示。但是，一旦打开更新面板，Grids就不再显示了。
我的ASPX -
<asp:gridview runat="server" id="gvParent" width="98%" bordercolor="#00ABA4"
horizontalalign="Center" borderstyle="Solid" rowstyle-horizontalalign="Center"
selectedrowstyle-verticalalign="Middle"
autogeneratecolumns="False" datakeynames="Staff ID" emptydatatext="No Record Found!"
borderwidth="1px" allowpaging="True" pagesize="5" OnRowDataBound="gvParent_RowDataBound" OnRowCreated="gvParent_RowCreated" >
<Columns>
<asp:TemplateField>
<ItemTemplate>
<img alt="" style="cursor: pointer" src="../../_layouts/15/images/eTRAMS_img/plus.gif" />
<asp:Panel ID="PnlClassification" runat="server" Style="display: none">
<asp:GridView ID="gvClassification" runat="server" AutoGenerateColumns="false" CssClass="ChildGrid" Width="100%"
HeaderStyle-HorizontalAlign="Left">
<Columns>
<asp:TemplateField HeaderStyle-HorizontalAlign="Left">
<ItemTemplate>
<asp:ImageButton ID="ImgClassification" runat="server" ImageUrl="../../_layouts/15/images/eTRAMS_img/plus.gif"
CommandArgument='<%# Eval("HistoryClassification") %>'></asp:ImageButton>
<%--child Gridview--%>
<asp:UpdatePanel ID="UpdatePanel1" ChildrenAsTriggers="false" runat="server" UpdateMode="Always">
<ContentTemplate>
<asp:Panel ID="pnlCurrent" runat="server" Style="display:none;">
<asp:GridView ID="gvCurrent" runat="server" AutoGenerateColumns="false" CssClass="ChildGrid" Width="100%"
HeaderStyle-HorizontalAlign="Left" DataKeyNames="TrainingName">
<Columns>
<asp:TemplateField HeaderText="No.">
<ItemTemplate>
<asp:Label ID="Label1" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="TrainingName" HeaderText="Training Title" />
<asp:BoundField DataField="LastTrainingAttendedFrom" HeaderText="Attended Date From" />
<asp:BoundField DataField="LastTrainingAttendedTo" HeaderText="Attended Date To" />
<asp:BoundField DataField="Refresher" HeaderText="Remark" />
</Columns>
</asp:GridView>
</asp:Panel>
<asp:Panel ID="PnlOthers" runat="server" Style="display:none;">
<asp:GridView ID="gvOthers" runat="server" AutoGenerateColumns="false"
CssClass="ChildGrid" Width="100%" HeaderStyle-HorizontalAlign="Left"
DataKeyNames="TrainingName">
<Columns>
<asp:TemplateField HeaderText="No.">
<ItemTemplate>
<asp:Label ID="Label2" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="TrainingName" HeaderText="Training Title" />
<asp:BoundField DataField="LastTrainingAttendedFrom" HeaderText="Attended Date From" />
<asp:BoundField DataField="LastTrainingAttendedTo" HeaderText="Attended Date To" />
</Columns>
</asp:GridView>
</asp:Panel>
</ContentTemplate>
<Triggers>
<%--<asp:AsyncPostBackTrigger ControlID="ImgClassification" EventName="Click" />--%>
</Triggers>
</asp:UpdatePanel>
<asp:Label ID="lblClassification" runat="server" Text='<%# Eval("HistoryClassification") %>' CommandName="Select"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</asp:Panel>
</ItemTemplate>
<ItemStyle Width="20px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="No.">
<ItemTemplate>
<asp:Label ID="Label4" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Staff Name" HeaderText="Staff Name" />
<asp:BoundField DataField="Staff ID" HeaderText="Staff Number" />
<asp:BoundField DataField="Position Code" HeaderText="Position Code" />
<asp:BoundField DataField="Position Title" HeaderText="Position Name" />
<asp:BoundField DataField="Division" HeaderText="Division" />
<asp:BoundField DataField="Department" HeaderText="Department" />
<asp:BoundField DataField="Section" HeaderText="Section" />
</Columns>
</asp:gridview>
代码背后 -
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
InitializeControl();
ScriptManager.GetCurrent(this.Page).RegisterAsyncPostBackControl(gvParent);
}
private void ImgClassification_Click（object sender，ImageClickEventArgs e） { ImageButton ImgClassification =（发送者为ImageButton）; GridViewRow row =（ImgClassification.NamingContainer as GridViewRow）; if（ImgClassification.CommandArgument ==“Current”） { row.FindControl（“pnlCurrent”）。Visible = true; ImgClassification.ImageUrl =“../../_layouts/15/images/eTRAMS_img/minus.jpg”; GridView gvCurrent = row.FindControl（“gvCurrent”）作为GridView; string strPast = ImgClassification.CommandArgument; getCurrentHistory（strPast，gvCurrent）;
UpdatePanel updtPnlPast = row.FindControl("UpdatePanel1") as UpdatePanel;
updtPnlPast.Update();
}
if(ImgClassification.CommandArgument == "Past")
{
row.FindControl("PnlOthers").Visible = true;
ImgClassification.ImageUrl = "../../_layouts/15/images/eTRAMS_img/minus.jpg";
GridView gvOthers = row.FindControl("gvOthers") as GridView;
string strPast = ImgClassification.CommandArgument;
getJoinQuery(strPast, gvOthers);
UpdatePanel updtPnlPast = row.FindControl("UpdatePanel1") as UpdatePanel;
updtPnlPast.Update();
}
if (ImgClassification.CommandArgument == "Others")
{
row.FindControl("PnlOthers").Visible = true;
ImgClassification.ImageUrl = "../../_layouts/15/images/eTRAMS_img/minus.jpg";
GridView gvOthers = row.FindControl("gvOthers") as GridView;
string strPast = ImgClassification.CommandArgument;
getJoinQuery(strPast, gvOthers);
UpdatePanel updtPnlPast = row.FindControl("UpdatePanel1") as UpdatePanel;
updtPnlPast.Update();
}
}
我尝试了尽可能多的东西，但没有结果。你能搞清楚，我在这里缺少什么？这是停止显示网格。
答案 0 :(得分：0)
最后我发现有一定的复杂性限制，可以由UpDatePanel处理，不仅限于此。对于我的场景来说，这是非常深刻的嵌套问题，所以我无法实现它。最后，我转向JQuery方法来实现我的目标，这对我来说非常好。
感谢你们每个人的支持和建议。