users.cls

Visual Basic + Oracle 9i数据库应用系统开发与实例《小区物业管理系统》,界面还行

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "Users"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
'1   UserName    Varchar2 40 用户名
'2   Pwd Varchar2 40 密码
'3   EmpName Varchar2 40 员工姓名

Public UserName As String
Public Pwd As String
Public EmpName As String

Public Sub Init()
  UserName = ""
  Pwd = ""
  EmpName = ""
End Sub

'删除HSEMAN.Users数据
Public Sub Delete(ByVal TmpUser As String)
  If TmpUser = "Admin" Then
    Exit Sub
  End If
  
  DB_Connect
  SqlStmt = "DELETE FROM HSEMAN.Users WHERE UserName='" _
          + Trim(TmpUser) + "'"
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub

Public Function GetInfo(ByVal TmpUser As String) As Boolean
  UserName = TmpUser
  
  DB_Connect
  
  SqlStmt = "SELECT * FROM HSEMAN.Users WHERE UserName='" _
          + Trim(TmpUser) + "'"
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) = SQL_NO_DATA_FOUND Then
    GetInfo = False
    Exit Function
  Else
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 2, 1, ColVal, Lench(ColVal), pcblen)
    Pwd = TrimStr(ColVal)
    
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 3, 1, ColVal, Lench(ColVal), pcblen)
    EmpName = TrimStr(ColVal)
  End If
    
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  GetInfo = True
  DB_Disconnect
End Function

Public Function In_DB(ByVal TmpUser As String) As Boolean
  DB_Connect
  
  SqlStmt = "SELECT * FROM HSEMAN.Users WHERE UserName='" _
          + Trim(TmpUser) + "'"
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) = SQL_NO_DATA_FOUND Then
    In_DB = False
  Else
    In_DB = True
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)

  DB_Disconnect
End Function

Public Sub Insert()
  DB_Connect
  
  SqlStmt = "INSERT INTO HSEMAN.Users Values('" _
     + Trim(UserName) + "','" + Trim(Pwd) _
     + "','" + Trim(EmpName) + "')"
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub

Public Sub Update(ByVal TmpUser As String)
  DB_Connect
  
  SqlStmt = "Update HSEMAN.Users Set UserName='" + Trim(UserName) _
          + "',Pwd='" + Trim(Pwd) _
          + "',EmpName='" + Trim(EmpName) _
          + "' WHERE UserName='" + Trim(TmpUser) + "'"
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub