C# AjaxControlToolKit AutoCompleteXtender未呈现

我正在使用Asp.Net/C，在我的一个页面中，我正在使用Ajax AutoCompleteXtender进行自动建议，下面是我正在使用的代码

        <Services>
        <asp:ServiceReference Path="AutoCompleteSearchByName.asmx"  />
        </Services>
        </asp:ScriptManager> 
        <asp:TextBox ID="txtCountry" runat="server"></asp:TextBox>
        <ajaxtoolkit:autocompleteextender runat="server" ID="autoComplete1" 
        TargetControlID="txtCountry" ServicePath="AutoCompleteSearchByName.asmx" 
        ServiceMethod="GetNames" MinimumPrefixLength="1" EnableCaching="true" />

这是我的AutoCompleteSearchByName.asmx代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace CwizBankApp
{
    /// <summary>
    /// Summary description for AutoCompleteSearchByName
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [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 AutoCompleteSearchByName : System.Web.Services.WebService
    {

        [WebMethod]
        public string[] GetNames(string prefixText)
        {
            DataSet dst = new DataSet();
            SqlConnection sqlCon = new SqlConnection(ConfigurationManager.AppSettings["Server=Server;Database=CwizData;Trusted_Connection=True"]);
            string strSql = "SELECT f_name FROM cust_master WHERE f_name LIKE '" + prefixText + "%' ";
            SqlCommand sqlComd = new SqlCommand(strSql, sqlCon);
            sqlCon.Open();
            SqlDataAdapter sqlAdpt = new SqlDataAdapter();
            sqlAdpt.SelectCommand = sqlComd;
            sqlAdpt.Fill(dst);
            string[] cntName = new string[dst.Tables[0].Rows.Count];
            int i = 0;
            try
            {
                foreach (DataRow rdr in dst.Tables[0].Rows)
                {
                    cntName.SetValue(rdr["f_name"].ToString(), i);
                    i++;
                }
            }
            catch { }
            finally
            {
                sqlCon.Close();
            }
            return cntName;
        }
    }
}

谁能建议我如何解决这个问题。

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谢谢

检查您是否为此使用了正确的DLL，并查看下面的代码

如果仍然不起作用，请检查本文，并通过编写代码检查您犯了什么错误：

试试这个：

<ajaxToolkit:ToolkitScriptManager  ID="ScriptManager1" runat="server">

</ajaxToolkit:ToolkitScriptManager>
<ajaxToolkit:AutoCompleteExtender ID="autoComplete1" runat="server"
  EnableCaching="true"
  BehaviorID="AutoCompleteEx"
  MinimumPrefixLength="2"
  TargetControlID="myTextBox"
  ServicePath="AutoComplete.asmx"
  ServiceMethod="GetCompletionList" 
  CompletionInterval="1000"  
  CompletionSetCount="20"
  CompletionListCssClass="autocomplete_completionListElement"
  CompletionListItemCssClass="autocomplete_listItem"
  CompletionListHighlightedItemCssClass="autocomplete_highlightedListItem"
  DelimiterCharacters=";, :"
  ShowOnlyCurrentWordInCompletionListItem="true">

或

---

这与您的答案不符，但如果您愿意，也可以使用jquery soltuion，这是本文的全文：

我尝试了您发布的代码，现在它说错误创建控件autocomplete1“true”无法在属性“caching”上设置。我建议您下载该文章的代码，然后尝试将其包含在项目中，或者通过比较代码来检查错误。我不确定您是否使用AutocompleteSearchByName.asmx。如果是这样，那一定是出了什么问题。你能显示一下你的自动完成搜索名asmx的代码吗？@AshwiniVerma，我编辑了我的question@freebird：您正在使用ScriptManager吗？尝试使用ToolkitScriptManager而不是ScriptManager。

<ajaxToolkit:ToolkitScriptManager  ID="ScriptManager1" runat="server">

</ajaxToolkit:ToolkitScriptManager>
<ajaxToolkit:AutoCompleteExtender ID="autoComplete1" runat="server"
  EnableCaching="true"
  BehaviorID="AutoCompleteEx"
  MinimumPrefixLength="2"
  TargetControlID="myTextBox"
  ServicePath="AutoComplete.asmx"
  ServiceMethod="GetCompletionList" 
  CompletionInterval="1000"  
  CompletionSetCount="20"
  CompletionListCssClass="autocomplete_completionListElement"
  CompletionListItemCssClass="autocomplete_listItem"
  CompletionListHighlightedItemCssClass="autocomplete_highlightedListItem"
  DelimiterCharacters=";, :"
  ShowOnlyCurrentWordInCompletionListItem="true">