AtEndOfStream 方法

如果文件指针位于 TextStream 文件的末尾，则返回 true；如果不在末尾，则返回 false。只读。

语法

object.AtEndOfStream

参数

Object：必需。始终为 TextStream 对象的名称。

注释

AtEndOfStream 属性仅适用于打开的供进行读取的 TextStream 文件，否则会出现错误。

以下代码说明了 AtEndOfStream 属性的用法：

示例 1：

Function ReadEntireFile(filespec)
    Const ForReading = 1
    Dim fso, theFile, retstring
    Set fso = CreateObject("Scripting.FileSystemObject")
    Set theFile = fso.OpenTextFile(filespec, ForReading, False)
    Do While theFile.AtEndOfStream <> True
        retstring = retstring & theFile.ReadLine
    Loop
    theFile.Close
    ReadEntireFile = retstring
End Function

' Usage
Dim fileContent
fileContent = ReadEntireFile("C:\Path\To\Your\File.txt")

示例 2：

Function ReadUntilString(filespec, searchString)
    Const ForReading = 1
    Dim fso, theFile, line, foundString
    Set fso = CreateObject("Scripting.FileSystemObject")
    Set theFile = fso.OpenTextFile(filespec, ForReading, False)
    foundString = False
    Do While theFile.AtEndOfStream <> True And foundString = False
        line = theFile.ReadLine
        If InStr(line, searchString) > 0 Then
            foundString = True
        End If
    Loop
    theFile.Close
    If foundString Then
        ReadUntilString = "String found: " & line
    Else
        ReadUntilString = "String not found."
    End If
End Function

' Usage
Dim result
result = ReadUntilString("C:\Path\To\Your\File.txt", "searchString")