private bool UsernameInputIsValid()
{
if (FieldIsEmpty(screen.UsernameTextBox, "Username"))
{
screen.UsernameValidatorLabel.Text = "Enter valid username";
return(false);
}
if (FieldIsEmpty(screen.PasswordTextBox, "Password"))
{
return(false);
}
string username = screen.UsernameTextBox.Text.Trim();
bool userExists = UserFileUtil.UsernameExists(username);
if (!userExists)
{
screen.UsernameValidatorLabel.Text = "Couldn't find your username";
return(false);
}
screen.UsernameValidatorLabel.Text = "";
return(true);
}
private bool UsernameInputIsValid()
{
string username = screen.RUsernameTextBox.Text.Trim();
if (username.Length == 0)
{
screen.RegisterUserNameValidatorLabel.Text = "Enter username";
return(false);
}
if (username.Where(Char.IsLetter).Count() == 0)
{
screen.RegisterUserNameValidatorLabel.Text = "Wrong username format";
return(false);
}
if (username.Equals("Username"))
{
screen.RegisterUserNameValidatorLabel.Text = "Enter valid username";
return(false);
}
bool userExists = UserFileUtil.UsernameExists(username);
if (userExists)
{
screen.RegisterUserNameValidatorLabel.Text = "This username is already registered";
return(false);
}
screen.RegisterUserNameValidatorLabel.Text = "";
return(true);
}