vb6在我機子上用下面數據測試 時間差20倍左右，十萬個數據就可以看出來了，我用的是壹百萬
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pDst As Any, pSrc As Any, ByVal ByteLen As Long)
Private Declare Function GetTickCount Lib "kernel32" () As Long
Private Sub Command1_Click()
Dim arrA() As Long
Dim arrB() As Long
ReDim arrA(1 To 1000000)
ReDim arrB(2 To 1000000)
For i = 1 To 1000000
arrA(i) = i
Next i
'取得開機至今的毫秒數
T = GetTickCount
For i = 2 To 1000000
arrB(i) = arrA(i)
Next
MsgBox "用時" + Str$(GetTickCount - T) + "毫秒"
'我的機子用時200毫秒左右，機子老古董了比較慢不要見笑
ReDim arrB(2 To 1000000) '註意這行已經清空了上面的賦值
T = GetTickCount
CopyMemory arrB(2), arrA(2), LenB(arrA(1)) * 999999
MsgBox "用時" + Str$(GetTickCount - T) + "毫秒"
'我的機子用時10毫秒左右
'看看最後壹個數據對不對
MsgBox arrB(1000000)
End Sub