'判斷檔案存在否

Public Class Form1
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        MsgBox(IO.File.Exists("C:\KeyinErrMsg1.log"))
    End Sub
End Class

ref: http://social.msdn.microsoft.com/forums/zh-TW/232/thread/5529426a-2489-47f8-b487-3584f1482f87