private void SignUp_User_change(object sender, EventArgs e) //signing up
{
User user = new User();
user.Username = SignUp_User_txt.Text;
if (Transmitter.CheckUser(user))//check if username is Available
{
SignUp_User_Label.ForeColor = Color.Green;
SignUp_User_Label.Text = "OK ✓";
usercheck = true;
}
else
{
SignUp_User_Label.ForeColor = Color.Red;
SignUp_User_Label.Text = "Username used before";
usercheck = false;
}
}