Always redirects to login page

Hi All,

I have implemented form authentication in my project by gone through some article on net.

But After implementing form authentication it goes in same block( where user id and password match) but redirects to Login.aspx instead of mentioned page in that block.

if (status == 1)
        {
             // user id and password exists 
            if (FormsAuthentication.Authenticate(txtUserId.Value.ToString(), txtPassword.Value.ToString()))
            {
                FormsAuthentication.RedirectFromLoginPage(txtUserId.Value.ToString(), false);
                Response.Redirect("Dash_Board.aspx");
            }
            else
            {
            }  

           
        }

Web config<system.web><authentication mode="Forms"><forms loginUrl="Login.aspx" defaultUrl="Dash_Board.aspx"></forms></authentication><authorization><deny users="?"/></authorization>

Please suggest.