How can I update Username and password in aspnet_Users table and other table was created by me tbl_users simultaneously?

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C#

ASP

ASP.NET

SQL-Server

I am Making a Web project and maintaining role management in this application. When I had been created web project then i defined role management in this application. When I creates user using createUser() function data stores in aspnet_Users,aspnet_Membership and other table that one has been created by me (tbl_users) stores all user information including some info of aspnet_Users,aspnet_Membership table. I am able to create data in these tables simultaneously but now i want to update and delete data in these tables simultaneously how can it's possible plz let me know.

Here My code

protected void btn_signup_Click(object sender, EventArgs e)
        {
            try
            {
                // Create new user.
                objuser.email=txt_email.Text;
                objuser.password=txt_password.Text;
                objuser.username = TextBox1.Text;
                if (Membership.RequiresQuestionAndAnswer)
                {
                    MembershipUser newUser = Membership.CreateUser(objuser.email,objuser.password,objuser.username);
                }
                else
                {
                    MembershipUser newUser = Membership.CreateUser(
                     objuser.email,
                     objuser.password,
                     objuser.username);
                    int i = BusinessUser.BusinessRegisterUser(objuser);
                     if (i > 0)
                     {
                         Session["user_authenticate"] = "Verified";
                         Session["user_email"] = objuser.email;
                         Label1.Text = Session["user_email"].ToString();
                         login1.Style.Add("display", "none");
                         logout.Visible = true;
                         Response.Redirect("user_registration.aspx");

                     }
                }
                show_menu();
                //Response.Redirect("login.aspx");
            }
            catch (MembershipCreateUserException ex)
            {
                WarningModal.Show();
               lblWarning.Text = GetErrorMessage(ex.StatusCode);
               pnlIssues.Visible = true;
            }
            catch (HttpException ex)
            {
                WarningModal.Show();
                lblWarning.Text= ex.Message;
            }
        }
        protected void loginUser_Authenticate(object sender, AuthenticateEventArgs e)
        {
            try
            {
                
               if (Membership.ValidateUser(loginUser.UserName, loginUser.Password))
                {
                    Session["user_authenticate"] = "Verified";
                    e.Authenticated = true;
                    Session["user_email"] = loginUser.UserName;
                    objuser.email = Session["user_email"].ToString();
                    Label1.Text = Session["user_email"].ToString();
                    login1.Style.Add("display", "none");
                    logout.Visible = true;
                }
                else
                {
                    e.Authenticated = false;
                }
            }
            catch (Exception ex)
            {
              
            }
        }