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上传时间: 2009-06-18
详细说明： SQL+VB做成的licit Public gUserName As String Public gUserKind As String Public gEmployeeId As String Public gLoginSucceeded As Boolean Public Const BLUE = &HFF0000 Public Const WHITE = &H80000005 Sub Main() Dim fLogin As New frmLogin '启动登录窗体 fLogin.Show vbModal '装入并显示模式窗体。 If Not gLoginSucceeded Then MsgBox "系统启动失败,请重试!", vbOKOnly + vbExclamation, "警告" End If Unload fLogin End Sub Public Function ConnectString() As String ConnectString = "Provider=SQLOLEDB.1;Password=sa;User ID=sa;Initial Catalog=DBManPower;Data Source=127.0.0.1;" End Function Public Function ExecuteSQL(ByVal SQL As String, rst As ADODB.Recordset, _ Optional enableWrite As Boolean = True) As Boolean Dim con As ADODB.Connection Dim sTokens() As String On Error GoTo Execute_Error sTokens = Split(SQL) Set con = New ADODB.Connection con.Open ConnectString '打开数据库 Set rst = New ADODB.Recordset If enableWrite Then '读写方式 rst.Open Trim$(SQL), con, adOpenStatic, adLockOptimistic Else '只读方式 rst.Open Trim$(SQL), con, adOpenStatic, adLockReadOnly End If ExecuteSQL = True Exit Function Execute_Error: ExecuteSQL = False Exit Function End Function Public Function DBExist(ByVal SQL As String) As Integer Dim con As ADODB.Connection Dim sTokens() As String Dim flag As String Dim rst As ADODB.Recordset sTokens = Split(SQL) Set con = New ADODB.Connection con.Open ConnectString flag = ExecuteSQL(SQL, rst, False) '判断该记录是否存在 If rst.RecordCount <> 0 Then DBExist = rst.RecordCount Else DBExist = 0 End If con.Close End Function Public Function txtIsNull(txt As TextBox) As Boolean If Trim(txt.Text) = "" Then txtIsNull = True txt.SetFocus txt.BackColor = BLUE Else txtIsNull = False End If ...展开收缩
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