ajaxcontroltoolkit:AutoCompleteExtender用法

完整代码如下，请看：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="comboBox测试.WebForm1" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
        </asp:ToolkitScriptManager>
        <asp:TextBox ID="TextBox1" runat="server" Width="300px"></asp:TextBox>
        <asp:AutoCompleteExtender ID="TextBox1_AutoCompleteExtender" runat="server" ServicePath="AutoComplete.asmx"
            ServiceMethod="GetPort" TargetControlID="TextBox1" MinimumPrefixLength="1"  CompletionSetCount="10"></asp:AutoCompleteExtender>
    </div>
    </form>
</body>
</html>

其中的 AutoComplete.asmx是：

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

using System.Data;
using System.Data.sqlClient;

namespace comboBox测试
{
    /// <summary>
    /// AutoComplete 的摘要说明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolBoxItem(false)]
    [System.Web.Script.Services.ScriptService]
    public class AutoComplete : System.Web.Services.WebService
    {

        [WebMethod]
        public string HelloWorld()
        {
            return "Hello World";
        }

        [WebMethod]
        public string[] GetData(string prefixText,int count)
        {
            string[] data = new string[4] { "中国","中国台湾","中国香港","美国" };
            return data.Where(p => p.IndexOf(prefixText) >= 0).Take(count).ToArray();
        }


        [WebMethod]
        public string[] GetPort(string prefixText,int count)
        {
            string connection = "*****";
            sqlConnection cn;
            DataSet ds = new DataSet();
            using (cn = new sqlConnection(connection))
            {
                cn.Open();
                string sql = "******";
                sqlDataAdapter adapter = new sqlDataAdapter(sql,cn);
                adapter.Fill(ds);
                cn.Close();
            }
            int lenght = ds.Tables[0].Rows.Count;
            string[] data = new string[lenght];
            for (int i = 0; i < lenght; i++)
            {
                string temp = ds.Tables[0].Rows[i]["PortName"].ToString() + "  " +
                    ds.Tables[0].Rows[i]["PortCode"].ToString() + "  " +
                    ds.Tables[0].Rows[i]["NationName"].ToString() + "  " +
                    ds.Tables[0].Rows[i]["NationCode"].ToString() + "  ";
                data[i] = temp;
            }
            return data;
        }

    }//end class
}

要提醒的是：

ServiceMethod一定要是：返回值为string [] 参数一定是 string prefixText 和 int count

原文链接：https://www.f2er.com/ajax/165859.html

ajaxcontroltoolkit:AutoCompleteExtender用法

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