private void btn_login_Click(object sender, EventArgs e)
{
User lastUser = userList.UserList.Last();
lblErrorInput.Hide();
String decryptedPass;
String encryptedPass = Encrypt(txtBoxPassword.Text, GenerateEncryptionKey());
if (!txtBoxUsername.Text.Equals("") || !txtBoxPassword.Text.Equals(""))
{
foreach (User user in userList.UserList)
{
decryptedPass = Decrypt(user.Password, GenerateEncryptionKey());
//add pass and name of user to string
nameList.Add(user.Name);
passList.Add(user.Password);
if (txtBoxUsername.Text.Equals(user.Name) && txtBoxPassword.Text.Equals(decryptedPass))
{
switch (user.Position)
{
case "Cashier":
{
CashierMenuForm menuPage = new CashierMenuForm(user);
this.Hide();
menuPage.ShowDialog();
this.Close(); //close previous form
break;
}
case "Kitchen":
{
KitchenForm kitchenPage = new KitchenForm();
this.Hide();
kitchenPage.ShowDialog();
this.Close(); //close previous form
break;
}
case "Admin":
{
ProductViewForm productPage = new ProductViewForm();
this.Hide();
productPage.ShowDialog();
this.Close(); //close previous form
break;
}
default:
{
lblErrorInput.Text = "User doesnt have a position. Please contact the admin.";
lblErrorInput.Show();
break;
}
} //end switch
} //end if
if (user.Equals(lastUser))
{
//check in list if name or pass exists
if (!nameList.Contains(txtBoxUsername.Text))
{
loginCounter -= 1;
lblErrorInput.Text = "Please enter valid username . " + loginCounter + " tries left.";
lblErrorInput.Show();
break;
}//end if else
if (!passList.Contains(encryptedPass))
{
loginCounter -= 1;
lblErrorInput.Text = "Please enter valid password. " + loginCounter + " tries left.";
lblErrorInput.Show();
break;
}//end if else
//if both name and pass exists among users, check if both entered name and password are from different users or not
if (nameList.IndexOf(txtBoxUsername.Text) != passList.IndexOf(txtBoxPassword.Text))
{
loginCounter -= 1;
lblErrorInput.Text = "Wrong password for account. " + loginCounter + " tries left.";
lblErrorInput.Show();
break;
}
}
} //end foreach
} //end if
else
{
loginCounter -= 1;
lblErrorInput.Text = "Please enter username or password. " + loginCounter + " tries left.";
lblErrorInput.Show();
}//end else
//if 5 tries of logins failed
if (loginCounter == 0)
{
MessageBox.Show("Invalid user. Closing application now.");
this.Close();
}
}
