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当我将 ASP.Net Formview 从只读模式切换到编辑模式时，需要超过 6 秒（从编辑到只读需要一瞬间）。我不知道这是什么原因。EditItemTemplate 包含很多控件（表格、文本框、下拉列表），但实际上并不比 ItemTemplate 更多。然而，我什至已经注释掉了完整的 FormView.DataBound，其中控件是数据有界的，但没有重大变化。我的 ASP.Net Web 应用程序使用 Ajax，Formview 完全嵌套在 UpdatePanel 中。对这种行为有什么建议或假设吗？

编辑：我已经从 EditItemtemplate 中删除了所有 Ajax 控件，现在它的执行速度与 Itemtemplate 一样快。可能是什么原因？删除了以下控件：

                    <act:ValidatorCalloutExtender ID="NoDeliveryNoteValidatorExtenderEdit" BehaviorID="NoDeliveryNoteValidatorExtenderEdit" runat="server" TargetControlID="NoDeliveryNoteValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="NoArrivalAtValidatorExtenderEdit" BehaviorID="NoArrivalAtValidatorExtenderEdit" runat="server" TargetControlID="NoArrivalAtValidatorEdit" Width="150px"   HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="ArrivalAtValidatorExtenderEdit" BehaviorID="ArrivalAtValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="ArrivalAtValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="NoPalletCountValidatorExtenderEdit" BehaviorID="NoPalletCountValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="NoPalletCountValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="PalletCountIntegerValidatorExtenderEdit" BehaviorID="PalletCountIntegerValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="PalletCountIntegerValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="NoWeightInValidatorExtenderEdit" BehaviorID="NoWeightInValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="NoWeightInValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="WeightInIntegerValidatorExtenderEdit" BehaviorID="WeightInIntegerValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="WeightInIntegerValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="WeightOutIntegerValidatorExtenderEdit" BehaviorID="WeightOutIntegerValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="WeightOutIntegerValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="NoCountInValidatorExtenderEdit" BehaviorID="NoCountInValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="NoCountInValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="CountInIntegerValidatorExtenderEdit" BehaviorID="CountInIntegerValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="CountInIntegerValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="CountOutIntegerValidatorExtenderEdit" BehaviorID="CountOutIntegerValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="CountOutIntegerValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="NoRecipientValidatorExtenderEdit" BehaviorID="NoRecipientValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="NoRecipientValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="NoChargeTypeValidatorExtenderEdit" BehaviorID="NoChargeTypeValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="NoChargeTypeValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:ValidatorCalloutExtender ID="NoCustomerValidatorExtenderEdit" BehaviorID="NoCustomerValidatorExtenderEdit" PopupPosition="right" runat="server" TargetControlID="NoCustomerValidatorEdit" Width="150px" HighlightCssClass="highlight" WarningIconImageUrl="~/images/warning.gif" CloseImageUrl="~/images/close.gif" />
                    <act:CalendarExtender ID="ArrivalAtExtenderEdit" runat="server" BehaviorID="ArrivalAtExtenderEdit" TargetControlID="TxtArrivalAtEdit"></act:CalendarExtender>

所以看来我应该将此线程重命名为“ASP.NET AJAX：扩展器控件的性能问题”。

实际上我的问题是，我在我的项目（3.0x）中有一个对 AjaxControlToolkit.dll 的旧引用。当我删除它并添加更新的 (3.5x) 版本时，它的执行速度几乎与没有扩展器控件时一样快。

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2 回答 2

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Actually my problem was, that i had an old reference to AjaxControlToolkit.dll in my Project(3.0x). When i removed it and added the newer (3.5x) Version it performed nearly as fast as without the Extender Controls.

于 2010-07-07T14:21:43.207 回答
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当它们不在视野范围内时，AJAX 控件可能不会加载它们的脚本或注册自己，因此当您使用内联控件进入编辑模式时，所有这些都会发生......我没有尝试过这个控件，但是从逻辑上讲，这似乎就是发生这种情况的原因。

每个 AJAX 控件都经过一个初始化过程（所有 $create 客户端方法调用），这可能需要一段时间......

HTH。

于 2010-06-16T12:17:02.043 回答