收到财务费用:谁能帮我解释一下下面的VB原代码，谢了！

Option Explicit

Dim fileName As String
Private Sub Command1_Click()
'将文本框中的信息添加到列表框中
Dim i As Integer
With ListView1.ListItems.Add()
.Text = Text1(0)
For i = 1 To 4
.SubItems(i) = Text1(i)
Next i
End With
End Sub

Private Sub Command2_Click()
'删除列表框中信息
If ListView1.ListItems.Count > 0 Then
If MsgBox("真的要删除吗？", vbQuestion + vbYesNo + vbDefaultButton2) = vbYes Then
ListView1.ListItems.Remove ListView1.SelectedItem.Index
End If
End If
End Sub

Private Sub Form_Load()
Dim tpStr As String, i As Integer, j As Integer
Me.Caption = "通讯录"
For j = 0 To 4
Text1(j).Text = ""
Next j

fileName = App.Path & "\data.txt"
If Dir(fileName) <> "" Then
'加载数据
Open fileName For Input As #1
Do While Not EOF(1)
With ListView1.ListItems.Add()
For i = 0 To 4
Line Input #1, tpStr
If i = 0 Then
.Text = tpStr
Else
.SubItems(i) = tpStr
End If
Next i
End With
Loop
Close #1
End If
End Sub

Private Sub Form_Unload(Cancel As Integer)
Dim i As Integer
Dim tpList As ListItem
'保存数据
Open fileName For Output As #1
For Each tpList In ListView1.ListItems
Print #1, tpList.Text
For i = 1 To 4
Print #1, tpList.SubItems(i)
Next i
Next tpList
Close #1
End Sub