I am using VB.NET and microsoft access as my database, i am new to VB.NET and i tried to make different access levels depending on the current role.For example, After logging in, Admin will proceed to the main page And if users logs in, they will be directed to a different page. I have already set the different roles in my database, and i found some coding online to help me
However i keep getting the error 'UserRole' is not declared. It may be inaccessible due to its protection level. Do i need to declare UserRole first? if so, how do i do it? Any help would be much appreciated , thank you :)
Public Class Form1 Dim loginerror As String Dim UserRole As String Public Function login() Dim DBconn As New ADODB.Connection Dim user As New ADODB.Recordset
Dim Username As String
Dim userDB As String
Dim passDB As String
Dim UserFound As Boolean
DBconn.Open("Provider = Microsoft.Jet.OLEDB.4.0;" & _
"Data Source = '" & Application.StartupPath & "\LoginDB.mdb'")
user.Open("UserTable", DBconn, ADODB.CursorTypeEnum.adOpenStatic, ADODB.LockTypeEnum.adLockOptimistic)
UserFound = False
login = False
Username = "Username = '" & txtuser.Text & "'" '
Do
user.Find(Username)
If user.BOF = False And user.EOF = False Then
userDB = user.Fields("Username").Value.ToString
passDB = user.Fields("Password").Value.ToString
If userDB <> txtuser.Text Then
user.MoveNext()
Else
UserFound = True
If passDB = txtpass.Text Then
UserRole = user.Fields("roles").Value.ToString
user.Close()
DBconn.Close()
Return True
Else
loginerror = "Invalid Password"
user.Close()
DBconn.Close()
Return False
End If
End If
Else
loginerror = "Invalid Username"
user.Close()
DBconn.Close()
Return False
End If
Loop Until UserFound = True
user.Close()
DBconn.Close()
Return False
End Function
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If login() = True And UserRole = "admin" Then
adminwelcome.Show()
Me.Close()
ElseIf login() = True Then
Welcome.Show()
Me.Close()
Else
MessageBox.Show(loginerror, "Login Message")
End If
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
AcceptButton = Button1
Me.Show()
Application.DoEvents()
txtuser.Focus()
End Sub
Private Sub txtpass_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtpass.TextChanged
End Sub
Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click
End Sub
Private Sub txtuser_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtuser.TextChanged
End Sub
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
End Sub
Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
End Sub
Private Sub Label3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label3.Click
End Sub
End Class
I'm assuming that you're pulling UserRole from the database. You're getting this error because that variable has not been declared yet.
I would pull that information (The user's role) and store it into a class-level variable named UserRole . Then, you'll be able to access it in the Button1_Click sub.
Public Class Form1
Dim loginerror As String
Dim UserRole As String
Public Function login()
Dim DBconn As New ADODB.Connection
Dim user As New ADODB.Recordset
Dim Username As String
Dim userDB As String
Dim passDB As String
Dim UserFound As Boolean
DBconn.Open("Provider = Microsoft.Jet.OLEDB.4.0;" & _
"Data Source = '" & Application.StartupPath & "\LoginDB.mdb'")
user.Open("UserTable", DBconn, ADODB.CursorTypeEnum.adOpenStatic, ADODB.LockTypeEnum.adLockOptimistic)
UserFound = False
login = False
Username = "Username = '" & txtuser.Text & "'" '
Do
user.Find(Username)
If user.BOF = False And user.EOF = False Then
userDB = user.Fields("Username").Value.ToString
passDB = user.Fields("Password").Value.ToString
If userDB <> txtuser.Text Then
user.MoveNext()
Else
UserFound = True
If passDB = txtpass.Text Then
UserRole = user.Fields("UserRole").Value.ToString
user.Close()
DBconn.Close()
Return True
Else
loginerror = "Invalid Password"
user.Close()
DBconn.Close()
Return False
End If
End If
Else
loginerror = "Invalid Username"
user.Close()
DBconn.Close()
Return False
End If
Loop Until UserFound = True
user.Close()
DBconn.Close()
Return False
End Function
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If login() = True And UserRole = "admin" Then
adminwelcome.Show()
Me.Close()
ElseIf login() = True Then
Welcome.Show()
Me.Close()
Else
MessageBox.Show(loginerror, "Login Message")
End If
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
AcceptButton = Button1
Me.Show()
Application.DoEvents()
txtuser.Focus()
End Sub
Private Sub txtpass_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtpass.TextChanged
End Sub
Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click
End Sub
Private Sub txtuser_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtuser.TextChanged
End Sub
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
End Sub
Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
End Sub
Private Sub Label3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label3.Click
End Sub
End Class
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