当使用 AjaxControlToolkit AutoCompleteExtender 发送太快时，Ajax 请求将被中止

发布于 2024-10-07 15:22:44 字数 1551 浏览 3 评论 0原文

我正在 asp.net ajax 上使用示例 AutoCompleteExtender网站，我遇到了不必要的行为。首先我想说的是，来自 asp.net 站点的示例实在是太慢了。 1 秒的 CompletionInterval 对我来说太长了。因此，我将其降低到 300 毫秒，现在我收到了这些请求中止的消息。 Firebug 向我展示了这个：

POST http://localhost:49539/AutoComplete.asmx/GetCompletionList Aborted

当请求被中止时，它显然无法检索新列表，因此不会显示选项列表，这会导致用户体验不佳。如果我打字速度很慢，那么请求就会顺利完成，并且我会得到选项列表。似乎我需要完成每个请求才能为用户提供最佳体验，但请注意...

有人知道我需要做什么才能始终在输入字母后 100-400 毫秒内弹出列表？

注意：看起来 IE 和 Chrome 没有中止请求，因此我得到了更好的响应时间，并且列表立即弹出。这可能是一个侥幸，在另一台计算机上的工作方式有所不同 - 我不知道。

另请注意：我的 GetCompletionList() 函数非常基本，仅返回硬编码值（无数据库请求），因此速度非常快。

这是.aspx

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
    <ContentTemplate>
        <asp:TextBox ID="TextBox1" runat="server" autocomplete="off"></asp:TextBox>
        <ajaxToolkit:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" 
            TargetControlID="TextBox1" 
            ServicePath="~/AutoComplete.asmx" 
            ServiceMethod="GetCompletionList"
            MinimumPrefixLength="1" 
            CompletionInterval="200"
            CompletionSetCount="12"
            EnableCaching="true">
        </ajaxToolkit:AutoCompleteExtender>    
    </ContentTemplate>
</asp:UpdatePanel>

原文

I'm using the sample AutoCompleteExtender on the asp.net ajax site and am running into unwated behavior. First let me just say the sample from the asp.net site is just too dang slow. The 1 second CompletionInterval is too long for my taste. So I lower it to 300 ms and now I get these request aborted messages. Firebug shows me this:

POST http://localhost:49539/AutoComplete.asmx/GetCompletionList Aborted

When the request is aborted, it obviously fails to retrieve the new list and thus not displaying the list of options which makes for a poor user experience. If I type slowly, then the requests go through fine and I get the list of options. It seems like I need every request to complete to give the user the best experience, but note sure...

Does anyone know what I need to do to always make the list pop up within 100-400 ms of typing a letter?

Note: It looks like IE and Chrome are not aborting the requests and thus I get a much better response time and the list pops up right away. This may be a fluke and work differently on another computer - I don't know.

Also note: My GetCompletionList() function is very basic and only returns hard coded values (no DB requests), so it's very fast.

Here's the aspx

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
    <ContentTemplate>
        <asp:TextBox ID="TextBox1" runat="server" autocomplete="off"></asp:TextBox>
        <ajaxToolkit:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" 
            TargetControlID="TextBox1" 
            ServicePath="~/AutoComplete.asmx" 
            ServiceMethod="GetCompletionList"
            MinimumPrefixLength="1" 
            CompletionInterval="200"
            CompletionSetCount="12"
            EnableCaching="true">
        </ajaxToolkit:AutoCompleteExtender>    
    </ContentTemplate>
</asp:UpdatePanel>

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