<script type="text/javascript" language="javascript">

        <!--

        //以XML求取数据

        function XmlPost(theEmail)

        {

          var webFileUrl = "../User/CheckUser.aspx?LogonName=" + theEmail;

          var result = "";

                   

          if (window.ActiveXObject) {

            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");

            }

            else if (window.XMLHttpRequest) {

            xmlHttp = new XMLHttpRequest();

            }

          //var xmlHttp = new ActiveXObject("MSXML2.XMLHTTP");

          xmlHttp.open("POST", webFileUrl, false);

          xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");   

          xmlHttp.send("");               

                 

            xmlHttp.onreadystatechange=function()

            {

                if (xmlHttp.readyState==4)

                {

                    result = xmlHttp.responseText;

                }

            }

            if(xmlHttp.status!=200)

            {

                alert ('网络故障(xmlHttp.status='+xmlHttp.status+'),请稍后再试!');

            }

               

            result = xmlHttp.responseText; 

          result = result.substring(0,result.indexOf("?EX"));

         

          if(result != "false")

          {           

            return true;

          }

          else

          {

            return false;

          }

        }

        //-->

    </script>''' <summary>

''' 检测用户是否存在<文件名:../User/CheckUser.aspx>

''' </summary>

''' <remarks>Created by dzh @2006/06/27 18:22</remarks>

Partial Class Web_User_CheckUser

    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        If Request.QueryString("LogonName") Is Nothing Then

            Response.Write("false" + "?EX")

            Response.End()

            Exit Sub

        End If

        If (New EasyClick.EasyBusiness.UserBusiness).GetUserByLogonName(Request.QueryString("LogonName").ToString) Is Nothing Then

            Response.Write("false" + "?EX")

            Response.End()

            Exit Sub

        Else

            Response.Write("true" + "?EX")

            Response.End()

            Exit Sub

        End If

    End Sub

End Class