train.cls

采用VisualBasic和SQL Server 2000开发 功能比较全面的旅游资源管理系

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "Train"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False

Public Tid As Long
Public Tno As String
Public Sstation As String
Public Estation As String
Public Stime As String
Public Etime As String
Public PriceYz As Single
Public PriceRz As Single
Public PriceYw As String
Public PriceRw As Single
Public Input_time As String

Public Sub Init()
  Tid = 0
  Tno = ""
  Sstation = ""
  Estation = ""
  Stime = ""
  Etime = ""
  PriceYz = 0
  PriceRz = 0
  PriceYw = 0
  PriceRw = 0
  Input_time = ""
End Sub

Public Sub Delete(ByVal TmpTid As Long)
  DB_Connect
  
  SqlStmt = "DELETE FROM Train WHERE Tid=" + Trim(TmpTid)
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
End Sub

Public Function GetInfo(ByVal TmpTid As Long) As Boolean
  Tid = TmpTid
  
  DB_Connect
  
  SqlStmt = "SELECT * FROM Train WHERE Tid=" + Trim(TmpTid)
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) = SQL_NO_DATA_FOUND Then
    GetInfo = False
    Init
  Else
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 2, 1, ColVal, Len(ColVal), pcblen)
    Tno = TrimStr(ColVal)
    
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 3, 1, ColVal, Len(ColVal), pcblen)
    Sstation = TrimStr(ColVal)
    
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 4, 1, ColVal, Len(ColVal), pcblen)
    Estation = TrimStr(ColVal)
    
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 5, 1, ColVal, Len(ColVal), pcblen)
    Stime = TrimStr(ColVal)
    
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 6, 1, ColVal, Len(ColVal), pcblen)
    Etime = TrimStr(ColVal)
  
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 7, 1, ColVal, Len(ColVal), pcblen)
    PriceYz = Val(ColVal)
    
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 8, 1, ColVal, Len(ColVal), pcblen)
    PriceRz = Val(ColVal)
   
    ColVal = String(4000, 0)
    Rc = SQLGetData(Hstmt, 9, 1, ColVal, Len(ColVal), pcblen)
    PriceYw = Val(ColVal)
    
    ColVal = String(4000, 0)
    Rc = SQLGetData(Hstmt, 10, 1, ColVal, Len(ColVal), pcblen)
    PriceRw = Val(ColVal)
    
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 11, 1, ColVal, Len(ColVal), pcblen)
    Input_time = TrimStr(ColVal)
    
    GetInfo = True
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Function GetId(ByVal TmpTno As String, _
                      ByVal TmpSstation As String, _
                      ByVal TmpEstation As String) As Long
  DB_Connect
  
  SqlStmt = "SELECT * FROM Train WHERE Tno='" + Trim(TmpTno) _
          + "' And Sstation='" + Trim(TmpSstation) _
          + "' And Estation='" + Trim(TmpEstation) + "'"
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND Then
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 1, 1, ColVal, Len(ColVal), pcblen)
    GetId = Val(ColVal)
  Else
    GetId = 0
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Function In_DB(ByVal TmTno As String, _
                      ByVal TmpSstation As String, _
                      ByVal TmpEstation As String) As Boolean
  DB_Connect
  
  SqlStmt = "SELECT * FROM Train WHERE Tno='" + Trim(TmTno) _
          + "' And Sstation='" + Trim(TmpSstation) _
          + "' And Estation='" + Trim(TmpEstation) + "'"
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND Then
    In_DB = True
  Else
    In_DB = False
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Sub Insert()
  dd = Date
  dd = Format(dd, "yyyy-mm-dd")
  t = Time
  tt = Format(tt, "hh:mm")
  
  DB_Connect
  
  SqlStmt = "INSERT INTO Train (Tno, Sstation, Estation, Stime," _
          + " Etime, PriceYz, PriceRz, PriceYw, PriceRw, Input_time)" _
          + " VALUES('" + Trim(Tno) + "','" + Trim(Sstation) _
          + "','" + Trim(Estation) + "','" + Trim(Stime) _
          + "','" + Trim(Etime) + "'," + Trim(PriceYz) _
          + "," + Trim(PriceRz) + "," + Trim(PriceYw) _
          + "," + Trim(PriceRw) + ",'" + dd + " " + tt + "')"
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub

Public Sub LoadTno(ByVal TmpSstation As String, _
                   ByVal TmpEstation As String)
  Dim i As Integer
  Erase ArrTno
  ReDim ArrTno(0)
  
  DB_Connect
  SqlStmt = "SELECT Tno FROM Train WHERE Sstation='" _
          + Trim(TmpSstation) + "' And Estation='" _
          + Trim(TmpEstation) + "' ORDER BY Tno"
  OdbcExt (SqlStmt)
  i = 0
  Do While SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 1, 1, ColVal, Len(ColVal), pcblen)
    ReDim Preserve ArrTno(i + 1)
    ArrTno(i) = TrimStr(ColVal)
    i = i + 1
  Loop
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)

  DB_Disconnect
End Sub

Public Sub Update(ByVal OriId As String)
  dd = Date
  dd = Format(dd, "yyyy-mm-dd")
  t = Time
  tt = Format(tt, "hh:mm")
  
  DB_Connect
  SqlStmt = "UPDATE Train SET Tno='" + Trim(Tno) _
          + "',Sstation='" + Trim(Sstation) + "',Estation='" _
          + Trim(Estation) + "', Stime='" + Trim(Stime) _
          + "', Etime='" + Trim(Etime) + "', PriceYz=" _
          + Trim(PriceYz) + ", PriceRz=" + Trim(PriceRz) _
          + ", PriceYw=" + Trim(PriceYw) + ", PriceRw=" _
          + Trim(PriceRw) + ", Input_time='" _
          + Trim(dd) + " " + Trim(tt) + "' WHERE Tid=" _
          + Trim(OriId)
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub