VB打开与保存txt文件的方法

Private Sub cmdsave_Click()
Dim filelocation As String
' loads save as box
  commondialog1.ShowSave
  filelocation = commondialog1.FileName
' append saves over file if it assists
  Open filelocation For Append As #1
    Print #1, text1.text
  Close #1
End Sub
Private Sub cmdopen_Click()
Dim filelocation As String
' show open box
  commondialog1.ShowOpen
  filelocation = commondialog1.FileName
' input files into text1.text  
  Open filelocation For Input As #1
Do Until EOF(1)
    Input #1, Data
    text1.text = text1.text + Data + vbNewLine
  EOF (1)
  Loop
  Close #1
End Sub