Imports System.IO

寫入:

Dim fw As New StreamWriter(filename, False) '設成True為累加,設成False為覆寫
fw.Write(txtData.Text)
'將字串存入暫存
fw.Flush()
'將暫存送入目的地
fw.Close()
'關閉資料暫存

讀取:

Dim fr As New StreamReader(filename)
txtData.Text =
""
Do Until fr.EndOfStream
   txtData.Text += fr.ReadLine 
'新增字串

    'txtData.Text += vbCrLf

    'Currage Return Line Feed =chr(13) chr(10)

   txtData.Text += Chr(13) & Chr(10'於字尾加入斷行
Loop
fr.Close()

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