module1.bas

餐饮管理信息系统 my sql visual basic

Attribute VB_Name = "Module1"
Public fMainForm As frmMain '程序主窗体
Public UserName As String '用户名
Public PWD As String     '用户密码
Public CONN As String '数据库连接字符串

Sub Main()
    CONN = "FileDSN=Restaurant.dsn;UID=sa;PWD="
    Dim fLogin As New frmLogin
    fLogin.Show vbModal
    If Not fLogin.OK Then
        '登录失败后退出程序
        End
    End If
    Unload fLogin
    Set fMainForm = New frmMain
    fMainForm.Show
End Sub

Public Function ExecuteSQL(ByVal SQL _
   As String, MsgString As String) _
   As ADODB.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 CONN
   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
      
      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 Function Testtxt(txt As String) As Boolean
    If Trim(txt) = "" Then
        Testtxt = False
    Else
        Testtxt = True
    End If
End Function