c#版登陆file:///C:\Users\j\Desktop\WebSite\Default.aspx

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    SqlDataSource sds = new SqlDataSource(Dao.ConnectionString, "select count(*) from t_user where username = @username and userpass = @userpass");

    protected void Page_Load(object sender, EventArgs e)
    {
        Login1.Authenticate += new AuthenticateEventHandler(Login1_Authenticate);
        Response.Cookies["username"].Value = "";
        Response.Cookies["userpass"].Value = "";
    }

    protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
    {
        string username = Login1.UserName;
        string userpass = Login1.Password;

        sds.SelectParameters.Add("username", username);
        sds.SelectParameters.Add("userpass", userpass);

        IEnumerable ie = sds.Select(DataSourceSelectArguments.Empty);
        System.Data.DataView dv = (System.Data.DataView)ie;

        if (Convert.ToInt32(dv[0][0]) > 0)
        {
            Response.Cookies["username"].Value = username;
            Response.Cookies["userpass"].Value = userpass;
            Response.Redirect("~/Index.aspx");
        }
    }

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Login ID="Login1" runat="server">
        </asp:Login>
    </div>
    </form>
</body>
</html>