private void button3_Click(object sender, EventArgs e)
{
MainMenuForm form3 = new MainMenuForm();
form3.Show(this);
this.Hide();
}
private void button2_Click(object sender, EventArgs e)
{
MainMenuForm mmF = new MainMenuForm();
mmF.Show(this);
this.Hide();
}
private void loggedin_Click(object sender, EventArgs e) // checks if the user has given correct credentials
{
try
{
conn = new OleDbConnection(connectionstring);
conn.Open();
String query = "Select id,username from login where username='******' and password='******'";
OleDbCommand cmd = new OleDbCommand(query, conn);
OleDbDataReader rdr = cmd.ExecuteReader();
if (rdr.Read())
{
current_user_id = rdr.GetValue(1).ToString(); //saves the username to the public variable current_user_id.This is now the active user
MainMenuForm home = new MainMenuForm(); //sends the user to the main menu of the app
home.Show();
Hide();
}
else
{
MessageBox.Show("Δεν βρέθηκε χρήστης. Προσπαθήστε ξανά !");
}
}
catch (Exception ex)
{
MessageBox.Show("Φαίνεται ότι παρουσιάστηκε κάποιο σφάλμα. Δοκιμάστε ξανά !");
}
finally
{
conn.Close();
}
}
private void guest_Click(object sender, EventArgs e) //allow the user to enter the app as a guest.
{
current_user_id = "guest"; //guest is now the active user
MainMenuForm home = new MainMenuForm();
home.Show();
Hide();
}