protected void btnLogin_Click(object sender, EventArgs e)
        {
            string useremail = email.Value;
            string userpassword = password.Value;
            if(useremail == "" || userpassword =="")
            {
                lbl_result.Text = "You have not entered your email or password";
            }
            else
            {
                AzureUserBLL login = new AzureUserBLL();
                string dbpwd=login.CheckLogin(useremail);
                byte[] userpwd = Encoding.ASCII.GetBytes(userpassword);
                byte[] uphash = sha.ComputeHash(userpwd);
                string pwdhashbase64 = Convert.ToBase64String(uphash);
                Session["email"] = useremail;

                if (dbpwd == pwdhashbase64)

                    Response.Redirect("patientprogress.aspx");

                else
                    lbl_result.Text = "Error,Your Email or Password might be wrong";
            }
        }
        protected void btn_signup(object sender, EventArgs e)
        {
            string emailinput = email.Value;
            if (emailinput == "")
            {
                lbl_result.Text = "Email cannot be empty";
            }
            else
            {
                 emailcheck = EmailIsValid(emailinput);
            }

            string tnameinput = tname.Value;
            string userdob = dob.Value;
            string userpasswordinput = password.Value;
            string cfmpasswordinput = cfmpassword.Value;
            string mobileinput = mobileno.Value;

            if (emailcheck == true)
            {
                if (fu_upload.HasFile)
                {
                    if (fu_upload.PostedFile != null)
                    {
                        AzureUserBLL validateinput = new AzureUserBLL();
                        string FileName = Path.GetFileName(fu_upload.PostedFile.FileName);
                        fu_upload.SaveAs(Server.MapPath("PImages//" + FileName));
                        validateinput.CreateDoctorAcccount(emailinput, tnameinput, userpasswordinput, cfmpasswordinput, mobileinput, userdob, "PImages//" + FileName);
                        lbl_result.Text = validateinput.returnMessage;
                    }

                }
                else
                {
                    lbl_result.Text = "You did not upload a profile image";
                }

            }
            else
            {
                lbl_result.Text = "Email is Invalid";
            }
        }