private void ChangePWButton_Click(object sender, EventArgs e)
        {
            string OldPW_Input   = OldPW_Txtbox.Text;
            string NewPW_Input   = NewPW_Txtbox.Text;
            string Confirm_Input = ConfirmPW_Txtbox.Text;


            string OldPW_Real = ControlObj.GetPWFromMail(Email);

            if (OldPW_Input != OldPW_Real)
            {
                MessageBox.Show("Old Password is Incorrect");
                return;
            }
            if (NewPW_Input != Confirm_Input)
            {
                MessageBox.Show("New and Confirmed Passwords must be the same");
                return;
            }
            if (NewPW_Input.Length < 8)
            {
                MessageBox.Show("New password must be longer than or equal 8 characters");
                return;
            }

            ControlObj.UpdatePassword(Email, NewPW_Input);
            MessageBox.Show("Password Changed Succesfully");
        }