1. 在創建項目時,選擇創建"ASP.NET AJAX-Enabled Web Application";
2. 在程序中的ajax控件中要用到的WebService, WebService的開頭必須是這樣
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//[ToolboxItem(false)]
[System.Web.Script.Services.ScriptService]
全部代碼如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="AJAXEnabledWebApplication1._Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<div>
<table>
<tr>
<td>
</td>
<td>
</td>
<td style="width: 637px">
<asp:Button ID="Button1" runat="server" Text="Button" />
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td style="width: 637px">
<asp:TextBox ID="txtState" runat="server" autocomplete="off"></asp:TextBox>
<ajaxToolkit:AutoCompleteExtender
runat="server"
ID="autoComplete1"
TargetControlID="txtState"
ServicePath="TestWS.asmx"
ServiceMethod="GetCompletionList"
MinimumPrefixLength="2"
CompletionInterval="1000"
EnableCaching="true"
CompletionSetCount="12" />
<script type="text/javascript">
// Work around browser behavior of "auto-submitting" simple forms
var frm = document.getElementById("form1");
if (frm) {
frm.onsubmit = function() { return false; };
}
</script>
<%-- Prevent enter in textbox from causing the collapsible panel from operating --%>
<input type="submit" style="display:none;" />
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td style="width: 637px">
</td>
</tr>
</table>
</div>
</form>
</body>
</html> WebService代碼:using System;
using System.Data;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.ComponentModel;
using System.Collections.Generic;
namespace AJAXEnabledWebApplication1
{
/// <summary>
/// TestWS 的摘要說明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//[ToolboxItem(false)]
[System.Web.Script.Services.ScriptService]
public class TestWS : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return "Hello World";
}
[WebMethod]
public string[] GetState(string prefixText, int count)
{
ArrayList al = new ArrayList();
al.Add("ABCDEFG0");
al.Add("ABCDEFG1");
al.Add("ABCDEFG2");
al.Add("ABCDEFG3");
al.Add("ABCDEFG4");
al.Add("ABCDEFG5");
al.Add("ABCDEFG6");
al.Add("ABCDEFG7");
al.Add("ABCDEFG8");
return (string[])al.ToArray(typeof(string));
}
[WebMethod]
public string[] GetCompletionList(string prefixText, int count)
{
if (count == 0)
{
count = 10;
}
if (prefixText.Equals("xyz"))
{
return new string[0];
}
Random random = new Random();
List<string> items = new List<string>(count);
for (int i = 0; i < count; i++)
{
char c1 = (char)random.Next(65, 90);
char c2 = (char)random.Next(97, 122);
char c3 = (char)random.Next(97, 122);
items.Add(prefixText + c1 + c2 + c3);
}
return items.ToArray();
}
}
}