C＃asp.net 4.5中的AJAX AutoComplete不工作

I am trying to use AJAX for the first time and I am getting nowhere. I have read numerous websites and as far as I can tell my code is correct but when I test the page I am not getting any results.

我试图第一次使用AJAX，我无处可去。我已经阅读了很多网站，据我所知，我的代码是正确的，但是当我测试页面时，我没有得到任何结果。

Here is my aspx code:

这是我的aspx代码：

<%@ Page Title="Search" Language="C#" MasterPageFile="~/Search.Master" AutoEventWireup="true" CodeBehind="Search.aspx.cs" Inherits="NEReval.Search" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajax" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server" EnableViewState="True">

    <ajax:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server" EnablePageMethods="True">  
    </ajax:ToolkitScriptManager> 

    <asp:TextBox ID="tbxSearch" runat="server" TabIndex="9" Style="position: absolute; left: 0px; top: 35px" Height="21px" Width="400px"></asp:TextBox>
    <ajax:AutoCompleteExtender   
        ID="AutoCompleteExtender1"   
        TargetControlID="tbxSearch"
        MinimumPrefixLength="1"   
        CompletionSetCount="10"
        ServiceMethod="GetCompletionList"
        ServicePath="AutoCompleteService.asmx"
        runat="server" />

And here is my code behind which is in a file called AutoCompleteService.asmx

这里是我的代码，后面是一个名为AutoCompleteService.asmx的文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;

namespace NEReval
{
    /// <summary>
    /// Summary description for AutoCompleteService
    /// </summary>
    [WebService(Namespace = "http://www.nereval.com/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
    [System.Web.Script.Services.ScriptService]
    public class AutoCompleteService : System.Web.Services.WebService
    {
        [System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
        public static string[] GetCompletionList(string prefixText, int count)
        {
            List<String> Return = SearchList.GetSearchList(HttpContext.Current.Session["sTown"].ToString());

            return (from r in Return where r.StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase) select r).Take(count).ToArray();
        } 
    }
}

I have tested and GetSearchList is never called so it is not calling GetCompletionList. Can anyone see what I am doing wrong? I am programming this in Visual Studio Express 2012 for Web.

我已经测试过并且从未调用过GetSearchList，因此它不会调用GetCompletionList。谁能看到我做错了什么？我在Visual Studio Express 2012 for Web中编程。

1 个解决方案

#1

To prove this is a web service issue, in your search page code-behind create a page method, like this:

要证明这是一个Web服务问题，在您的搜索页面中代码隐藏创建一个页面方法，如下所示：

[WebMethod]
public static string[] GetCompletionList()
{
    List<String> Return = SearchList.GetSearchList(HttpContext.Current.Session["sTown"].ToString());

    return (from r in Return where r.StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase) select r).Take(count).ToArray();
}

Note: ASP.NET Page Methods must be static. Also you will probably need to add a few usings to get the code to compile.

注意：ASP.NET页面方法必须是静态的。此外，您可能需要添加一些使用来获取要编译的代码。

Now you can call this page method in your autocompleteextender markup as just the method name, because it is local to your markup, like this:

现在，您可以在autocompleteextender标记中将此页面方法称为方法名称，因为它是您的标记的本地方法，如下所示：

ServicePath="GetCompletionList"

#1