Hello, I'm a beginner and I created a log-in form in VB.net using Windows Form and configuring the Settings of the project. I need help on how can I prevent the user from accessing the other parts of the program if they haven't registered yet, as well as deleting the data of the account registered by the user.
Basically, I put a "Forgot your password?" button that the User can click on the Log-In form (main form). When clicked, it leads to the Password Recovery form that asks them security questions to help them recover their account. However, I want to make the Password Recovery form inaccessible if the user hasn't registered yet.
My main questions are:
- How can the program recognize that the user hasn't registered yet?
- How can I have the option for the user to delete their account, to make the variables (Settings stuff) empty again? (For example, if they deleted the account, then they will have to register again before they can access other parts of the program.)
This is the code I used so the user couldn't log-in if they're not registered. However it isn't accurate yet because I haven't figured out what code to use if the User isn't registered yet. (If one of the My.Settings.Stuff is empty). I just used an Else statement which works but isn't what I really want.
Private Sub LogIn_Click(sender As Object, e As EventArgs) Handles LogIn.Click If username.Text = My.Settings.Username And password.Text = My.Settings.Password Then MsgBox("Login successful") ElseIf username.Text = Nothing Or password.Text = Nothing Then MsgBox("Login unsuccessful. Please fill up all fields.") Else MsgBox("Please register an account first.") End If End Sub End Class
Here is the code I tried for the "Forgot your password?" To clarify, I ran the program and put in random data for username, password, etc. to see any errors before I coded this . So, both the My.Settings.Username and My.Settings.Password currently have data stored in them. I think that's why the code below doesn't work.
Private Sub LinkLabel1_LinkClicked(sender As Object, e As LinkLabelLinkClickedEventArgs) Handles LinkLabel1.LinkClicked If My.Settings.Username = Nothing And My.Settings.Password = Nothing Then MsgBox("You haven't registered an account yet.") Else Forgot.ShowDialog() End If
Here is how my main form looks like:
Here is the form that shows when the user clicks the Register button:
And here is the Password Recovery Form when the user clicks the "Forgot your password?"
I hope I explained my problem clearly. If not, please inform me of what I should make clearer/what I should add.