users.cls

来自「采用VisualBasic和SQL Server 2000开发 功能比较全面的」· CLS 代码 · 共 104 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
Public UserName As String
Public Pwd As String
Public EmpName As String

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

Public Sub Delete(ByVal TmpUser As String)
  If TmpUser = "Admin" Then
    Exit Sub
  End If
  
  DB_Connect
  SqlStmt = "DELETE FROM 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 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 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 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 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