Esempio n. 1
0
 //go back to the login screen
 private void btnBack_Click(object sender, EventArgs e)
 {
     Login login = new Login();
     login.Show();
     this.Hide();
 }
Esempio n. 2
0
        private void btnOK_Click(object sender, EventArgs e)
        {
            if (txtFirstName.Text == "")    //validating that information has been entered into the text boxes.
            {
                MessageBox.Show("Please enter first name");
                this.txtFirstName.Focus();
                return;
            }
            if (txtLastName.Text == "")
            {
                MessageBox.Show("Please enter last name");
                this.txtLastName.Focus();
                return;
            }
            if (txtUsername.Text == "")
            {
                MessageBox.Show("Please enter user name");
                this.txtUsername.Focus();
                return;
            }
            if (txtPassword.Text == "")
            {
                MessageBox.Show("Please enter password");
                this.txtPassword.Focus();
                return;
            }

            Boolean approved = false;   //bool for approval of validation
            u = txtUsername.Text;
            p = txtPassword.Text;
            firstname = txtFirstName.Text;
            lastname = txtLastName.Text;

            approved = UserValidate.validate(u,p);  //send to u and p to UserValidate to validate that it is in the correct format

            try
                {
                    if (approved == true)   //once approved, the username is queryed against the database to see if there is another user with the same name
                    {
                        var queryIsUsernameTaken = from users in context.users where users.username == u select u;
                        string usernameIsTaken = Convert.ToString(queryIsUsernameTaken);

                        if (!usernameIsTaken.Equals(u,StringComparison.OrdinalIgnoreCase))//if statement condition that name is not taken
                            {
                                this.addNewUserInformation();   //use the addNewUserInformation method
                                MessageBox.Show("Your information has been entered in the database, you will be re-routed to the login screen.","ScoreTrend");
                                Login login = new Login();      //create new login object and view login GUI
                                login.Show();
                                this.Hide();

                            }
                        else
                        {          //Message box to tell the username has been used and if they would like to go back to the login screen
                            if (MessageBox.Show(u + " is already been used, please select another username. Would you like to go back to login screen?", "", MessageBoxButtons.YesNo) == DialogResult.Yes) ;
                                {
                                    Login login = new Login();
                                    login.Show();
                                    this.Hide();
                                }

                            txtUsername.Clear();
                            txtPassword.Clear();
                            txtUsername.Focus();
                        }
                    }
                    else
                    {
                        MessageBox.Show("Usernames and Passwords must be a length of 8 to 20 aplhanumeric characters. The password cannot start with a digit, underscore or special character and must contain at least one digit.");
                        txtUsername.Clear();
                    }
                }
            catch (Exception ex)
                {
                    MessageBox.Show("Cannot communicate with database. Application will now close." + ex.Message);
                    Application.Exit();
                }
        }