Display user info using SQL Membership Provider

Dear friends,
I'm trying to display user info using SQL Membership Provider, but I couldn't, the codes are:
UserProfile.aspx:
<%@ Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="UserProfile.aspx.cs" Inherits="Users_UserProfile" %>
 
<asp:Content ID="HeadDiv" ContentPlaceHolderID="HeadPlaceHolder" Runat="Server">
</asp:Content>
<asp:Content ID="ContentDiv" ContentPlaceHolderID="ContentDivPlaceHolder" Runat="Server">
    <div id="UserProfileDiv">
        <h1>My Profile</h1>
        <div id="unitsLink" runat="server" visible="false"><a href="../Users/UserUnits.a ...