Excel vba用戶名/密碼查找

Question

Private Sub cmdLogin_Click()
On Error GoTo ErrorHandler

Dim RowNo As Long
Dim Id As String
Dim pw As String
Dim ws As Worksheets

Application.ScreenUpdating = False
Set ws = Worksheets("User&Pass")
Id = LCase(Me.txtLogin)


RowNo = Application.WorksheetFunction.Match(Id, ws.range("A2:A999"), 0)

CleanExit:
Set ws = Nothing ' free memory
Application.ScreenUpdating = True ' turn on the screen updating
Exit Sub

ErrorHandler:
MsgBox "Unable to match ID, enter valid ID.", vbOKOnly 
GoTo CleanExit

End Sub

我有一個excel userform我一直在努力，現在我需要它通過登錄屏幕看起來更專業。 我已經開始使用上面的代碼，但我已經走到了盡頭。

如何設置我的目標是說id和密碼是否匹配然后加載工作簿或取消隱藏工作簿並繼續。 用戶名和密碼位於名為“User＆Pass”的工作表上。目的是分別從a-user / b-pw列中讀取，如果成功，我將隱藏該工作表，以便他們無法看到其他用戶的信息

我從上面開始我只需要它說如果它匹配usercolumn然后相應的pw隔壁繼續其他去我的錯誤處理程序

我可以做關於隱藏和取消隱藏工作表的格式等，只需要幫助閱讀用戶名和密碼

非常感謝提前Z.

編輯嘗試一個;

Private Sub cmdLogin_Click()
On Error GoTo ErrorHandler
Dim RowNo As Long
Dim Id As String
Dim pw As String
Dim ws As Worksheets
Application.ScreenUpdating = False
Set ws = Worksheets("User&Pass")

Id = LCase(Me.txtLogin)
RowNo = Application.WorksheetFunction.Match(Id, ws.range("A2:A999"), 0)
RowNo = RowNo + 1
pw = ws.range("B" & RowNo)
If pw = Me.txtLogin Then
'continue
txt1.Value = "yes"
Else
GoTo ErrorHandler
End If


CleanExit:
Set ws = Nothing ' free memory
Application.ScreenUpdating = True ' turn on the screen updating
Exit Sub
ErrorHandler:
MsgBox "Unable to match ID, enter valid ID.", vbOKOnly
GoTo CleanExit
End Sub

@siddarthRout

Private Sub cmdLogin_Click()
Dim RowNo As Long
Dim Id As String, pw As String
Dim ws As Worksheet
Dim aCell As range
On Error GoTo ErrorHandler
Application.ScreenUpdating = True

Set ws = Worksheets("Details")
Id = LCase(Me.txtLogin)

Set aCell = ws.Columns(1).Find(What:=Id, LookIn:=xlValues, _
LookAt:=xlWhole, SearchOrder:=xlByRows, SearchDirection:=xlNext, _
MatchCase:=False, SearchFormat:=False)

'~~> If match found
If Not aCell Is Nothing Then
RowNo = aCell.Row
'~~> Rest of your code. For example if the password is
'~~> Stored in Col B then
Debug.Print aCell.Offset(, 1)
Unload Me
FrmMenu.Show
'~~> You can then use the above aCell.Offset(, 1) to
'~~> match the password which the user entered
Else '<~~ If not found
MsgBox "Unable to match ID, enter valid ID.", vbOKOnly
End If
CleanExit:
Set ws = Nothing
Application.ScreenUpdating = True
Exit Sub
ErrorHandler:
MsgBox Err.Description
Resume CleanExit
End Sub

Answer 1

測試和嘗試

這是你在嘗試什么？

碼

Option Explicit

Private Sub cmdLogin_Click()
    Dim RowNo As Long
    Dim Id As String, pw As String
    Dim ws As Worksheet
    Dim aCell As Range

    On Error GoTo ErrorHandler

    If Len(Trim(txtLogin)) = 0 Then
        txtLogin.SetFocus
        MsgBox "Username cannot be empty"
        Exit Sub
    End If

    If Len(Trim(txtPassword)) = 0 Then
        txtPassword.SetFocus
        MsgBox "Password cannot be empty"
        Exit Sub
    End If

    Application.ScreenUpdating = False

    Set ws = Worksheets("User&Pass")
    Id = LCase(Me.txtLogin)

    Set aCell = ws.Columns(1).Find(What:=Id, LookIn:=xlValues, _
    LookAt:=xlWhole, SearchOrder:=xlByRows, SearchDirection:=xlNext, _
    MatchCase:=False, SearchFormat:=False)

    '~~> If match found
    If Not aCell Is Nothing Then
        RowNo = aCell.Row
        If Me.txtPassword = aCell.Offset(, 1) Then
            FrmMenu.Show
            Unload Me
        Else
            MsgBox "Unable to match UserID or PasswordID, Please try again", vbOKOnly
        End If
    Else '<~~ If not found
        MsgBox "Unable to match UserID or PasswordID, Please try again", vbOKOnly
    End If
CleanExit:
    Set ws = Nothing
    Application.ScreenUpdating = True
    Exit Sub
ErrorHandler:
    MsgBox Err.Description
    Resume CleanExit
End Sub

提示 ：

永遠不要讓您的用戶（從安全角度）知道什么是錯誤的 - 用戶名或密碼。 始終顯示一條通用消息，例如“無法匹配UserID或PasswordID，請再試一次” :)

HTH

希德

Answer 2

其他方式

On Error Resume Next
If Me.password <> Application.VLookup(Me.username, Sheet1.Cells(1, 1).CurrentRegion, 2, False) Then
    MsgBox ("incorrect")
    Exit Sub
Else
    MsgBox ("Correct Password Entered")
End If

此外，您需要確保所有工作表從一開始就是xlSheetVeryHidden，以防止宏被禁用，並在成功登錄例程中取消隱藏它們。 您還需要在VBA項目上設置密碼，以防止人們取消隱藏工作表。 但請記住，Excel與濕紙袋一樣安全;）