private void registerBtn_Click(object sender, System.EventArgs e)
        {
            CUser user = new CUser();
            string msg=null;
            if(user.validateUserData(usernameTxt.Text, passwordTxt.Text, repasswordTxt.Text, renameTxt.Text, addressTxt.Text, emailTxt.Text, ref msg)==false)
            {
                MessageBox.Show(msg);
            }
            else
            {
                user.setUserData(usernameTxt.Text, passwordTxt.Text, renameTxt.Text, addressTxt.Text, emailTxt.Text);
                if(!user.registerUserWS())
                {
                    MessageBox.Show("An error occured while registering the user on the Authentication Server!!!");

                    this.Dispose();
                } else if(user.writeUserData())
                {
                    MessageBox.Show("The registration was created successfully!!!");

                    mf.registerUserBtn.Enabled = false;
                    mf.usernameTxt.Enabled =  true;
                    mf.passwordTxt.Enabled = true;
                    mf.startWalletBtn.Enabled = true;

                    this.Dispose();
                }
            }
        }