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已修复：缺少属性 CompletionInterval="0"

我正在测试 ajax 自动完成扩展器和 web 服务的功能。并发现自动完成扩展器需要一段时间来获取数据并显示。我目前没有数据库连接或类似的东西。我只是将所有项目放在 webservice 函数的数组中，并使用 LINQ 返回匹配的项目集。显示数据的时间间隔约为 1 秒。我尝试打开/关闭 EnableCaching，我发现有人在博客上建议这样做，但与 Google 如何搜索数十亿数据并在具有数十亿用户的实时网站上返回结果的方式相比，它仍然非常慢，没有几分之一秒的延迟。

虽然 Google 不会使用 asp.net、Linq 或脚本管理器来执行 Ajax 工作，但我只是在我的本地计算机上进行测试，没有数据库连接，我认为必须有一种方法可以让它更快地工作。可能我错过了在某处设置设置。这是我的代码。

aspx

    <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </asp:ToolkitScriptManager>

    <asp:TextBox ID="TextBox1" runat="server" Width="200px"></asp:TextBox>

    <asp:AutoCompleteExtender ID="TextBox1_AutoCompleteExtender" runat="server" ServiceMethod="HelloWorld" MinimumPrefixLength="1" EnableCaching="false" CompletionListCssClass="CompletionListCssClass"
    DelimiterCharacters="" Enabled="True" ServicePath="WebService.asmx" TargetControlID="TextBox1"> 
    </asp:AutoCompleteExtender>
    <br />
    <asp:Button ID="Button1" runat="server" Text="Search" />

code_behind 上没有任何内容。

这是网络服务的代码..

    <System.Web.Script.Services.ScriptService()> _
    <WebService(Namespace:="http://tempuri.org/")> _
    <WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
    <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
    Public Class WebService
    Inherits System.Web.Services.WebService

    <WebMethod()> _
    Public Function HelloWorld(prefixText As String) As String()

    Dim str() As String = {"Afghanistan", "Albania", "Algeria", "Andorra", "Angola", "Antigua and Barbuda", "Argentina", "Armenia", "Australia", "Austria", "Azerbaijan",
                            "Bahamas", "Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium", "Belize", "Benin", "Bhutan", "Bolivia", "Bosnia and Herzegovina", "Botswana", "Brazil", "Brunei",
                            "Bulgaria", "Burkina Faso", "Burundi", "Cambodia", "Cameroon", "Canada", "Cape Verde", "Central African Republic",
                            "Chad", "Chile", "China", "Colombi", "Comoros", "Congo (Brazzaville)", "Congo", "Costa Rica", "Cote d'Ivoire", "Croatia", "Cuba", "Cyprus",
                            "Czech Republic", "Denmark", "Djibouti", "Dominica", "Dominican Republic", "East Timor (Timor Timur)", "Ecuador", "Egypt", "El Salvador",
                            "Equatorial Guinea", "Eritrea", "Estonia", "Ethiopia", "Fiji", "Finland", "France", "Gabon", "Gambia, The", "Georgia", "Germany", "Ghana",
                            "Greece", "Grenada", "Guatemala", "Guinea", "Guinea-Bissau", "Guyana", "Haiti", "Honduras", "Hungary", "Iceland", "India", "Indonesia",
                            "Iran", "Iraq", "Ireland", "Israel", "Italy", "Jamaica", "Japan", "Jordan", "Kazakhstan", "Kenya", "Kiribati", "Korea, North",
                            "Korea, South", "Kuwait", "Kyrgyzstan", "Laos", "Latvia", "Lebanon", "Lesotho", "Liberia", "Libya", "Liechtenstein", "Lithuania",
                            "Luxembourg", "Macedonia", "Madagascar", "Malawi", "Malaysia", "Maldives", "Mali", "Malta", "Marshall Islands", "Mauritania", "Mauritius",
                            "Mexico", "Micronesia", "Moldova", "Monaco", "Mongolia", "Morocco", "Mozambique", "Myanmar", "Namibia", "Nauru", "Nepa", "Netherlands",
                            "New Zealand", "Nicaragua", "Niger", "Nigeria", "Norway", "Oman", "Pakistan", "Palau", "Panama", "Papua New Guinea", "Paraguay",
                            "Peru", "Philippines", "Poland", "Portugal", "Qatar", "Romania", "Russia", "Rwanda", "Saint Kitts and Nevis", "Saint Lucia", "Saint Vincent",
                            "Samoa", "San Marino", "Sao Tome and Principe", "Saudi Arabia", "Senegal", "Serbia and Montenegro", "Seychelles", "Sierra Leone", "Singapore",
                            "Slovakia", "Slovenia", "Solomon Islands", "Somalia", "South Africa", "Spain", "Sri Lanka", "Sudan", "Suriname", "Swaziland", "Sweden", "Switzerland",
                            "Syria", "Taiwan", "Tajikistan", "Tanzania", "Thailand", "Togo", "Tonga", "Trinidad and Tobago", "Tunisia", "Turkey", "Turkmenistan", "Tuvalu", "Uganda",
                            "Ukraine", "United Arab Emirates", "United Kingdom", "United States", "Uruguay", "Uzbekistan", "Vanuatu", "Vatican City", "Venezuela", "Vietnam",
                            "Yemen", "Zambia", "Zimbabwe"}

    Dim result As ArrayList = Nothing

    Dim query = From x In str
                Where x.ToLower.Contains(prefixText)
                Select x

    Return query.ToArray

    End Function

    End Class
4

2 回答 2

3

AutoCompleteExtender 中没有延迟属性吗？CompletionInterval 我认为。

于 2012-05-30T08:46:18.163 回答
0

正确的方法是添加CompletionInterval="xxx"where xxx 是超时时间（以毫秒为单位）。（工具是我对 ajaxtools 的定义）

        <asp:TextBox runat="server" ID="Search" CssClass="search" AutoPostBack="true" />

        <Tools:AutoCompleteExtender
            ID="Search_AutoCompleteExtender"
            runat="server"
            CompletionInterval="250" 
            MinimumPrefixLength="3" 
            DelimiterCharacters=""
            ServiceMethod="GetCompletionKeyList"
            ServicePath="Keys.Aspx"
            Enabled="True"
            CompletionListCssClass="CompletionListCssClass"
            CompletionListItemCssClass="CompletionListItemCssClass"
            CompletionListHighlightedItemCssClass="CompletionListHighlightedItemCssClass"
            TargetControlID="Search"/>

关于后面的代码VB

<System.Web.Services.WebMethod>
<System.Web.Script.Services.ScriptMethod()>
Public Shared Function GetCompletionKeyList(prefixText As String, count As Integer) As String()
      return {"Your", prefixText, "selection" }
end Function
于 2017-05-17T19:35:17.680 回答