c# - UpdatePanel、ModalPopupExtender 和输入按键问题

Question

有一个包含 2 个面板的 UpdatePanel，其中默认按钮设置为监听输入按键。 UpdatePanel 是 ModalPopupExtender 的 PopupControl。

在整个页面回发的模态弹出窗口中按 enter 时遇到问题。有任何想法吗？以下是一些代码片段(我已经删除了无关的字段...):

<div runat="server" id="divShippingEstimatorPopup" class="shippingEstimatorModalPopup">
<asp:UpdatePanel ID="upPopup" runat="server">
    <ContentTemplate>
        <asp:Panel runat="server" ID="pnlShippingEstimator" DefaultButton="lnkbtnGetEstimates">
            <div class="title content_title">Shipping Estimator</div>
            <asp:Label runat="server" ID="lblMessage" />
            <table cellpadding="0" cellpadding="0" class="shipping">
                <!-- Removed to shorten code snippet -->
                <tr>
                    <td colspan="2">
                        <div class="buttonHolder">                            
                            <Monarch:LinkButtonDefault runat="server" ID="lnkbtnGetEstimates" CssClass="button_action button_margin_right" CausesValidation="false">Get Estimates</Monarch:LinkButtonDefault>
                            <asp:LinkButton runat="server" ID="lnkbtnCancel" CssClass="button_secondary button_secondary_fixed" CausesValidation="false">Cancel</asp:LinkButton>
                            <div class="clear"></div>
                        </div>
                        <div class="clear"></div>
                    </td>
                </tr>
            </table>
        </asp:Panel>
        <asp:Panel runat="server" ID="pnlShippingOptions" DefaultButton="lnkbtnSetEstimate">
            <div class="shippingOptionsHolder" runat="server" id="divShippingOptionsHolder">
                <!-- Removed to shorten code snippet -->
                <div class="buttonHolder">
                    <Monarch:LinkButtonDefault runat="server" ID="lnkbtnSetEstimate" CssClass="button_action">Set Estimate</Monarch:LinkButtonDefault>
                    <div class="clear"></div>
                </div>
                <div class="clear"></div>
            </div>
        </asp:Panel>
    </ContentTemplate>
</asp:UpdatePanel>

请记住 LinkBut​​tonDefault 就是这样的:

public class LinkButtonDefault : LinkButton
{
    private const string AddClickScript = "SparkPlugs.FixLinkButton('{0}');";

    protected override void OnLoad(EventArgs e)
    {
        string script = String.Format(AddClickScript, ClientID);
        Page.ClientScript.RegisterStartupScript(GetType(), "click_" + ClientID,
            script, true);
        base.OnLoad(e);
    }
}

最后，这里是控件的其余部分:

<asp:UpdatePanel runat="server" ID="upGetEstimate">
    <ContentTemplate>
        <asp:LinkButton runat="server" ID="lnkbtnGetEstimate" CausesValidation="false">Get Estimate</asp:LinkButton>
    </ContentTemplate>
</asp:UpdatePanel>

<ajaxToolKit:ModalPopupExtender ID="shippingEstimatorPopupExtender" runat="server" TargetControlID="lnkbtnFake" PopupControlID="divShippingEstimatorPopup" BackgroundCssClass="monarchModalBackground"></ajaxToolKit:ModalPopupExtender>
<asp:LinkButton runat="server" ID="lnkbtnFake" style="display:none;"/>

<Monarch:PopupProgress ID="popupProgressGetEstimate" runat="server" AssociatedUpdatePanelId="upGetEstimate" />
<Monarch:PopupProgress ID="popupProgressGetEstimates" runat="server" AssociatedUpdatePanelId="upPopup" />

基本上，用户单击“获取估算”，加载表单时会出现一个进度条，表单显示在模态弹出窗口中。我猜这很简单，但我不能只得到正确的组合来让它正常工作。

Answer 1

首先尝试使用脚本管理器在后面的代码中注册脚本会发生什么情况。

我使用这种方法注册脚本:

public static void RegisterStartupScript(Control c, string script)
{
    if ((ToolkitScriptManager.GetCurrent(c.Page) as ToolkitScriptManager).IsInAsyncPostBack)
        ToolkitScriptManager.RegisterStartupScript(c, c.GetType(), "Script_" + c.ClientID.ToString(), script, true);
    else
        c.Page.ClientScript.RegisterStartupScript(c.GetType(), c.ClientID, script, true);
}

这会检查您的页面中是否有 ScriptManager。如果没有，它会使用完整的回发版本。