VB 检测文件变化 并获取变化的数据

Private Declare Function PathFileExists Lib "shlwapi.dll" Alias "PathFileExistsA" (ByVal pszPath As String) As LongDim file_bytes As String'用于检测文件夹是否存在

Private Sub Command1_Click()Unload MeEnd SubPrivate Sub Command2_Click()Label2(1).Caption = ""End SubPrivate Sub Form_Load()Label5.Caption = ALL_PATHDim FS, F As String, FL As StringSet FS = CreateObject("Scripting.FileSystemObject")If FS.FileExists(ALL_PATH) = True Then    Label6.Caption = "Have test data！"    Dim Out As String    Out = "File size: " & FileLen(ALL_PATH) & "bytes"    file_bytes = FileLen(ALL_PATH)    Label7.Caption = OutElse    Label6.Caption = "No test data！"End IfCall check_update  '檢測是否更新了End Sub

'根据文件大小变化判断是否变化Private Function check_update()      Do While file_bytes = FileLen(ALL_PATH)         DoEvents      Loop      file_bytes = FileLen(ALL_PATH)      Call loade_dataEnd Function

'循环到文件最后并提取数据Private Function loade_data()Dim gotline As StringDim NUM, RESULT As StringDim ARROpen ALL_PATH For Input As #4            Do While Not EOF(4)               Line Input #4, gotline            Loop        Close #4ARR = Split(gotline, ";", -1, 1)NUM = ARR(4)RESULT = ARR(5)Label2(1).Caption = "CH  " & NUM & "  " & RESULTCall check_updateEnd Function