// It registers the new user as long as all controls hold text
private void buttonRegister_Click(object sender, EventArgs e)
{
//variables to be used
string username = "", password = "", password2 = "", firstname = "", lastname = "", email = "", clientType = "", userType = "";
Int32 phone = 0;
//It checks that the text and combo boxes have something typed in them
bool hasText = checkTextControls();
if (!hasText)
{
MessageBox.Show("Please make sure all fields have data.");
comboBoxUserType.Focus();
return;
}
//It checks that the username doesn't exist yet in the DB
bool userOK = checkUsername(textBoxUserName.Text.Trim(), comboBoxUserType.Text);
if (!userOK)
{
MessageBox.Show("This user already exists in the Data Base, please try another one.");
textBoxUserName.BackColor = Color.LightCoral;
textBoxUserName.Focus();
return;
}
//It checks that the password==password2
bool passOK = checkPassword(textBoxPassword.Text.Trim(), textBoxPassword2.Text.Trim());
if (!passOK)
{
MessageBox.Show("Please make sure the password in both password fields is the same.");
textBoxPassword.BackColor = Color.LightCoral;
textBoxPassword2.BackColor = Color.LightCoral;
textBoxPassword.Focus();
return;
}
//It checks that the email is a proper one
bool emailOK = checkEmail(textBoxEmail.Text.Trim());
if (!emailOK)
{
MessageBox.Show("Please insert a proper email in the field.");
textBoxEmail.BackColor = Color.LightCoral;
textBoxEmail.Focus();
return;
}
//It checks that the phone number introduced is numbers if the control is enabled
if (textBoxPhone.Enabled == true)
{
bool phoneOK = int.TryParse(textBoxPhone.Text.Trim(), out phone);
if (!phoneOK)
{
MessageBox.Show("You can only write numbers in the phone field.");
textBoxPhone.BackColor = Color.LightCoral;
textBoxPhone.Focus();
return;
}
}
//(1) GET the data from the textboxes and store into variables created above, good to put in a try catch with error message
try
{
userType = comboBoxUserType.Text;
username = textBoxUserName.Text.Trim();
password = textBoxPassword.Text.Trim();
password2 = textBoxPassword2.Text.Trim();
firstname = textBoxFirst.Text.Trim();
lastname = textBoxLast.Text.Trim();
email = textBoxEmail.Text.Trim();
switch (userType)
{
case "Admins":
break;
case "Clients":
phone = int.Parse(textBoxPhone.Text.Trim());
clientType = comboBoxClientType.Text.Trim();
break;
case "Instructors":
phone = int.Parse(textBoxPhone.Text.Trim());
break;
default:
break;
}
}
catch
{
//Error message, more useful when you are storing numbers etc. into the database.
MessageBox.Show("Please make sure your data is in correct format.");
return;
}
//(2) Execute the INSERT statement, making sure all quotes and commas are in the correct places.
try
{
var insertClientQuery = "";
//It sends a different insert statement depending on the User Type Selection
switch (userType)
{
case "Admins":
insertClientQuery = $"INSERT INTO {userType} VALUES('{username}', '{password}', '{firstname}', '{lastname}', '{email}')";
break;
case "Clients":
insertClientQuery = $"INSERT INTO {userType} VALUES('{username}', '{password}', '{firstname}', '{lastname}', '{email}', {phone}, '{clientType}')";
break;
case "Instructors":
insertClientQuery = $"INSERT INTO {userType} VALUES('{username}', '{password}', '{firstname}', '{lastname}', '{email}', {phone})";
break;
default:
break;
}
SQL.executeQuery(insertClientQuery);
}
catch (Exception)
{
MessageBox.Show("Register attempt unsuccessful. Check insert statement. Could be a Username conflict too.");
return;
}
//success message for the user to know it worked
MessageBox.Show("Successfully Registered as " + userType + ": " + firstname + " " + lastname + ". Your username is: " + username);
//Go back to the login page since we registered successfully to let the user log in
Hide(); //hides the register form
LoginPage login = new LoginPage(); //creates the login page as an object
login.ShowDialog(); //shows the new login page form
this.Close(); //closes the register form that was hidden
}