colclass.cls

VB类实现学生信息管理系统

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "colclass"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Option Explicit
Private mcolclass As New Collection
    
Public Property Get count() As Long
count = mcolclass.count
End Property

Public Sub add(tmpclass As Class)
   mcolclass.add tmpclass
End Sub

Public Function remove(tmp_index As Integer) As Boolean
   If mcolclass.count >= 1 Then
      mcolclass.remove (tmp_index)
      remove = True
   Else
      remove = False
   End If
End Function

Public Function item(ByVal index As Variant) As Class
Set item = mcolclass.item(index)
End Function

Public Sub init()
  Dim SQLstmt As String    '存放SQL语句的字符串
  Dim msg_error As String
  Dim tmp_res As ADODB.Recordset
  Dim tmp_class As Class
  
  
  If db.db_state > 0 Then
  
    SQLstmt = "select * FROM class_info " '执行SQL语句"
    Set tmp_res = db.ExecuteSQL(SQLstmt, msg_error)
    
    
    
    If InStr(msg_error, "query_ok") > 0 Then 'have record
        While (tmp_res.EOF = False)
         If Trim(tmp_res.Fields("director")) = login_user.user_Id Or login_user.user_Id = "admin" Then '只有对应的班主任或是admin才能访问
                     Set tmp_class = New Class
                     tmp_class.State = 1 '有班级存在
                     tmp_class.class_no = tmp_res.Fields("class_no")
                     tmp_class.Grade = tmp_res.Fields("grade")
                     tmp_class.director = tmp_res("director")
                     tmp_class.classroom = tmp_res.Fields("classroom_no")
                     mcolclass.add tmp_class
                     Set tmp_class = Nothing
         End If
                     tmp_res.MoveNext
                     
         Wend
    
    End If
   
 End If
 
     Set tmp_res = Nothing
    
End Sub