ASP.NET AJAX無重新整理驗證使用者名稱

來源:互聯網
上載者:User

極其簡單,自行擴充

HTML代碼

<%@ 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;
}
//顯示提示資訊
function OnRequestComplete(result)
{
  if(result == ‘true’)
  {
    document.getElementById(’Message’).innerHTML = ‘提示:使用者名稱已被註冊.’;
    document.getElementById(’PostButton’).disabled = ‘disabled’;
  }
  else
  {
    document.getElementById(’Message’).innerHTML = ‘提示:使用者名稱可以使用.’;
    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 冊” disabled=”disabled” /><br />
    <div id=”Message”></div>
  </form>
</body>
</html>

WebService代碼

using System;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;

/// <summary>
/// WebServiceSample 的摘要說明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]

public class WebServiceSample : System.Web.Services.WebService
{

  public WebServiceSample () {

    //如果使用設計的組件,請取消注釋以下行
    //InitializeComponent();
  }

  [WebMethod]
  public string GetUser(string strUser)
  {
    string strMessage = null;
    if (strUser == “ADMIN”)
    {
      strMessage = “true”;
    }
    else
    {
      strMessage = “false”;
    }
    return strMessage;
  }
}

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