急救!!!利用Membership在注册时判断用户是否重名!

来源：百度知道 编辑：UC知道 时间：2024/06/02 02:07:45
注意：是在新用户注册的时候！
我想在新用户注册的时候利用AJAX连接后台获取数据判断用户是否重名！在后台用Membership，而不要去访问它的数据库。
谢谢各位高手了！！

代码如下：
<%@ Import Namespace="System.Data" %>
<%@ Import NameSpace="System.Data.OleDb" %>
<%@ page Language="VB" Debug="true"%>
<script runat="server">
Dim myConnection As OleDbConnection
Dim myCommand As OleDbCommand
Dim null AS DBnull
dim username as string,password as string
sub page_load(obj as object,e as eventargs)
username = request.QueryString("username")
password = request.QueryString("password")
if(username = "" or password = "")
response.write("用户名和密码不能为空")
end if
if(username <> "" and password <>"")
dim dbname as string