UpdatePanel内的GridView PAGING不适用于第二页更改,为什么?

时间:2013-09-20 13:26:52

标签: c# asp.net gridview updatepanel paging

我有两个updatepanel,其中一个包含gridview。问题是分页只是第一次正常工作。

这是标记:

<asp:UpdatePanel ID="upAnswers" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true">
    <ContentTemplate>
        <asp:GridView ID="gvAnswers" runat="server" CssClass="gv" Width="100%" ShowHeader="false" AllowPaging="True" PageSize="2" EnableSortingAndPagingCallbacks="true" OnPageIndexChanging="gvAnswers_PageIndexChanging" AutoGenerateColumns="False" AlternatingRowStyle-BackColor="#eee">
            <Columns>
                <asp:TemplateField HeaderText="Questions" ShowHeader="False">
                    <ItemTemplate>
                        <asp:Label ID="lblQuestions" onclick=<%# Eval("FaqID", "$('.lblAnswers_{0}').toggle('fast')") %> CssClass="block" runat="server" Text='<%# Eval("Title") %>'></asp:Label>
                        <asp:Panel ID="pnlS1" runat="server" CssClass='<%# Eval("FaqID", "lblAnswers_{0}") %>' style="display: none;">
                            <asp:Label ID="Label1" runat="server" Text='<%# Eval("Question") %>' CssClass="block bold"></asp:Label>
                            <asp:Label ID="lblAnswers" runat="server" Text='<%# Eval("Answer") %>'></asp:Label>
                        </asp:Panel>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    </ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="upgAnswers" runat="server" AssociatedUpdatePanelID="upAnswers" DisplayAfter="300">
    <ProgressTemplate>
        <div id="uiBlock" class="uiBlock">
        </div>
    </ProgressTemplate>
</asp:UpdateProgress>

和背后的代码:

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        GetAnsweredPublicFAQs();
    }
}

protected void GetAnsweredPublicFAQs()
{
    DataSet ds = cFAQs.getAnsweredPublicFAQs();

    gvAnswers.DataSource = ds;
    gvAnswers.DataBind();
}

protected void gvAnswers_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    gvAnswers.PageIndex = e.NewPageIndex;
    GetAnsweredPublicFAQs();
    gvAnswers.DataBind();
    upAnswers.Update();
}

作为参考,我使用ASP.NET 4.0 C#。

任何帮助都将受到高度赞赏。

此致 Kardo

1 个答案:

答案 0 :(得分:3)

将UpdatePanel声明更改为如下所示:

<asp:UpdatePanel ID="upAnswers" runat="server" UpdateMode="Conditional">
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="gvAnswers" EventName="PageIndexChanging" />

每当我遇到这些UpdatePanel的问题时,我发现明确声明触发器有用。特别是当你使用“非默认”事件来触发AsyncPostBack时(SelectedIndexChanged是GridView的“默认”事件)。

此外,ChildrenAsTriggers默认为true,因此我从标记中删除了它。