极其简单，自行扩展
HTML代码
<%@ Page Language=”C#” AutoEventWireup=”true” CodeFile=”Default.aspx.cs” Inherits=”_Default” %>
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.1//EN” “http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd“> <html xmlns=”http://www.w3.org/1999/xhtml“> <head runat=”server”> <title>Untitled Page</title> <script type=”text/javascript”> function GetUser() { requestSimpleService = WebServiceSample.GetUser(document.getElementById(’UserName’).value, OnRequestComplete); return false; } //显示提示信息 function OnRequestComplete(result) { if(result == ‘true’) { document.getElementById(’Message’).innerHTML = ‘提示:用户名已被注册.’; document.getElementById(’PostButton’).disabled = ‘disabled’; } else { document.getElementById(’Message’).innerHTML = ‘提示:用户名可以使用.’; document.getElementById(’PostButton’).disabled = ”; } } </script> </head> <body> <form id=”form1″ runat=”server”> <asp:ScriptManager ID=”ScriptManager1″ runat=”server”> <Services> <asp:ServiceReference Path=”WebServiceSample.asmx” /> </Services> </asp:ScriptManager> <input id=”UserName” type=”text” onblur=”return GetUser()” /> <input id=”PostButton” type=”button” value=”注 册” disabled=”disabled” /><br /> <div id=”Message”></div> </form> </body> </html>
WebService代码
using System; using System.Web; using System.Collections; using System.Web.Services; using System.Web.Services.Protocols; using System.Web.Script.Services;
/// <summary> /// WebServiceSample 的摘要说明 /// </summary> [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [ScriptService]
public class WebServiceSample : System.Web.Services.WebService {
public WebServiceSample () {
//如果使用设计的组件，请取消注释以下行 //InitializeComponent(); }
[WebMethod] public string GetUser(string strUser) { string strMessage = null; if (strUser == “ADMIN”) { strMessage = “true”; } else { strMessage = “false”; } return strMessage; } }
