module1.bas

9个VB写的数据库管理系统源代码

Attribute VB_Name = "Module1"
Public fMainForm As frmMain
Public flagPedit As Boolean
Public gintPmode As Integer
Public flagCedit As Boolean
Public gintCmode As Integer
Public flagGedit As Boolean
Public gintGmode As Integer
Public flagSedit As Boolean
Public gintSmode As Integer
Public flagOedit As Boolean
Public gintOmode As Integer



Sub Main()
    Dim fLogin As New frmLogin
    fLogin.Show vbModal
    If Not fLogin.OK Then
        'Login Failed so exit app
        End
    End If
    Unload fLogin


    Set fMainForm = New frmMain
    fMainForm.Show
End Sub

Public Function ConnectString() _
   As String
'returns a DB ConnectString
   ConnectString = "FileDSN=trade.dsn;UID=sa;PWD="
End Function
Public Function ExecuteSQL(ByVal SQL _
   As String, MsgString As String) _
   As ADODB.Recordset
'executes SQL and returns Recordset
   Dim cnn As ADODB.Connection
   Dim rst As ADODB.Recordset
   Dim sTokens() As String
   
   On Error GoTo ExecuteSQL_Error
   
   sTokens = Split(SQL)
   Set cnn = New ADODB.Connection
   cnn.Open ConnectString
   If InStr("INSERT,DELETE,UPDATE", _
      UCase$(sTokens(0))) Then
      cnn.Execute SQL
      MsgString = sTokens(0) & _
         " query successful"
   Else
      Set rst = New ADODB.Recordset
      rst.Open Trim$(SQL), cnn, _
         adOpenKeyset, _
         adLockOptimistic
      'rst.MoveLast     'get RecordCount
      Set ExecuteSQL = rst
      MsgString = "查询到" & rst.RecordCount & _
         " 条记录 "
   End If
ExecuteSQL_Exit:
   Set rst = Nothing
   Set cnn = Nothing
   Exit Function
   
ExecuteSQL_Error:
   MsgString = "查询错误: " & _
      Err.Description
   Resume ExecuteSQL_Exit
End Function
Public Sub EnterToTab(Keyasc As Integer)
    If Keyasc = 13 Then
        SendKeys "{TAB}"
    End If
End Sub
Public Function GetRkno() As String
    GetRkno = Format(Now, "yymmddhhmmss")
    Randomize
    GetRkno = GetRkno & Int((99 - 10 + 1) * Rnd + 10)
End Function