netresources.cls

大量优秀的vb编程

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "NetResources"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_Ext_KEY = "SavedWithClassBuilder6" ,"Yes"
Attribute VB_Ext_KEY = "Collection" ,"NetResource"
Attribute VB_Ext_KEY = "Member0" ,"NetResource"
Attribute VB_Ext_KEY = "Top_Level" ,"Yes"
Option Explicit

'local variable to hold collection
Private mCol As Collection

Friend Function Add(objNewMember As NetResource) As NetResource
' Note : this function only allows adding of already extant objects. NetResource objects cannot be created
' by adding them to a NetResources collection since most of the network structure is hardware based and
' cannot be changed by software.
    
    'create a new object
    mCol.Add objNewMember, objNewMember.RemoteName
    'return the object created
    Set Add = objNewMember

End Function

Public Property Get Item(vntIndexKey As Variant) As NetResource
Attribute Item.VB_UserMemId = 0
' This item routine is a slight modification from the norm
' If an invalid or unmatched key is passed then this property returns a Nothing object rather than an error
Dim nrX As NetResource
On Error Resume Next
Set nrX = mCol(vntIndexKey)
If Err <> 0 Then
    Set Item = Nothing
Else
    Set Item = nrX
End If
'Set Item = mCol(vntIndexKey)
End Property



Public Property Get Count() As Long
    'used when retrieving the number of elements in the
    'collection. Syntax: Debug.Print x.Count
    Count = mCol.Count
End Property


Public Sub Remove(vntIndexKey As Variant)
    'used when removing an element from the collection
    'vntIndexKey contains either the Index or Key, which is why
    'it is declared as a Variant
    'Syntax: x.Remove(xyz)


    mCol.Remove vntIndexKey
End Sub


Public Property Get NewEnum() As IUnknown
Attribute NewEnum.VB_UserMemId = -4
Attribute NewEnum.VB_MemberFlags = "40"
    'this property allows you to enumerate
    'this collection with the For...Each syntax
    Set NewEnum = mCol.[_NewEnum]
End Property


Private Sub Class_Initialize()
    'creates the collection when this class is created
    Set mCol = New Collection
End Sub


Private Sub Class_Terminate()
    'destroys collection when this class is terminated
    Set mCol = Nothing
End Sub