使用默认成员身份时添加自定义登录表单

我正在使用ASP 4.5 WebForms使用的默认成员资格提供程序（使用我自己的数据库），并且我在登录表单方面遇到了问题。我想制作一个自定义表单，因为我使用了一个花哨的CSS/HTML5代码，但使用默认控件时，我的Visual Studio会破坏它，我想在登录按键上执行一些自定义代码，同时维护Default Membership Provider已经带来的控制（如密码失败计数等）。我应该调用什么方法/过程，或者应该编写什么自定义代码，以便用户在编写用户名和密码时使用这些文本框的值进行登录？我试着尝试登录控制器的登录按钮，但它的范围太有限，表格仍然有点破坏设计。非常感谢您的帮助！

正如承诺的那样，这是我使用的完整代码，其中包括一些关于查询和其他内容的截断：

MembershipCreateStatus status;
        string passwordQuestion = "";
        string passwordAnswer = "";
        if (Membership.RequiresQuestionAndAnswer)
        {
            passwordQuestion = txtQ.Text;
            passwordAnswer = txtA.Text;
        }
       try
       {
            MembershipUser newUser = Membership.CreateUser(txtUserName.Text, txtPassword.Text,
                                                           txtEmail.Text, passwordQuestion,
                                                           passwordAnswer, true, out status);


            if (newUser == null)
            {
                Label1.Visible = true;
               Label1.Text = GetErrorMessage(status);
            }
            else
            {

                string connect4 = ConfigurationManager.ConnectionStrings["InternalConnection"].ConnectionString;
                using (SqlConnection conn4 = new SqlConnection(connect4))
                {
                    string query4 = "INSERT INTO [UserInfo] ([UserName], [ConfirmationToken], [Validated], [FullInfo], [EMail], [SocioNum], [Birthday], [PostalAddress], [Zip], [City], [State], [Phone], [Fullname], [SocialSecurityEncrypted], [JoinDate]) VALUES (@UserName, @ConfirmationToken, @Validated, @FullInfo, @EMail, @SocioNum, @Birthday, @PostalAddress, @Zip, @City, @State, @Phone, @Fullname, @SocialSecurityEncrypted, @JoinDate)";
                    SqlCommand cmd4 = new SqlCommand(query4, conn4);
));
                    string s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
                    Random r = new Random();
                    StringBuilder sb = new StringBuilder();
                    for (int i = 1; i <= 30; i++)
                    {
                        int idx = r.Next(0, 35);
                        sb.Append(s.Substring(idx, 1));
                    }
                    string token = Convert.ToString(sb);
                    cmd4.Parameters.AddWithValue("@ConfirmationToken", (token));
(parameters here)

                    cmd4.CommandTimeout = 240;
                    conn4.Open();
                    cmd4.ExecuteNonQuery();
                    conn4.Close();
                    Session["Fullname"] = txtNombre.Text;
                    Session["token"] = token;

                }
                //CUSTOM EMAIL CODE
                MailMessage mail = new MailMessage();
                SmtpClient SmtpServer = new SmtpClient("servername");
                mail.From = new MailAddress("fromhere@tothere.com");
                mail.To.Add(txtEmail.Text);
                mail.IsBodyHtml = true;
                mail.Subject = "Subject";
                mail.Body = "HTML CODE HERE while sending token for verification.";

                SmtpServer.Port = 25;
                SmtpServer.Credentials = new System.Net.NetworkCredential("user", "pass");
                SmtpServer.EnableSsl = false;
                SmtpServer.Send(mail);



                Response.Redirect("~/Login.aspx");
            }
        }
        catch
       {
           Label1.Visible = true;
           Label1.Text = "Erro. Verify info..";
        }
    }

    public string GetErrorMessage(MembershipCreateStatus status)
    {
        switch (status)
        {
            case MembershipCreateStatus.DuplicateUserName:
                return ".";
            case MembershipCreateStatus.DuplicateEmail:
                return ".";
            case MembershipCreateStatus.InvalidPassword:
                return "Password invalid.";
            case MembershipCreateStatus.InvalidEmail:
                return "";
            case MembershipCreateStatus.InvalidAnswer:
                return "";
            case MembershipCreateStatus.InvalidQuestion:
                return "";
            case MembershipCreateStatus.InvalidUserName:
                return "Invalid";
            case MembershipCreateStatus.ProviderError:
                return "Error";
            case MembershipCreateStatus.UserRejected:
                return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
            default:
                return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
        }
    }

}

}

它注册了ASP.NET Default Membership提供程序，但我创建了第二个表以获取更多信息，还创建了一个ConfirmationToken，该表生成并通过电子邮件发送给用户，然后用户单击类似确认的按钮，一个确认页面读取URL参数，如果它进行了验证，就会在UserInfo表中打开布尔值。在实际的ASP成员身份登录之前的登录过程中，我有一个用户验证查询，用于验证用户是否已经验证，如果已经验证，则继续使用默认的ASP成员资格登录。