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ASP.NET AJAX无刷新验证用户名

来源:互联网  宽屏版  评论
2008-08-16 07:22:41

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;

}

}

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 = "[url=http://tempuri.org/]http://tempuri.org/[/url]")] [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; } }
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