ReadFileBytes

Reads bytes from file using FSO, Number of bytes can be decided as well as offset bytes.
Not originally my work, but I enhanced it.
Does not check for file existence.
Pass ReadBytes -1 to read full file.

CodeFunctionName

What is this?

Public

Tested

Original Work

Function ReadFileBytes(FullFileName, OffsetBytes, ReadBytes)
    ' ReadFileBytes to read certain bytes from any file, using FSO stream
    '
    ' ReadBytes as -1 to read entire file
    '
    Dim objFSO
    Dim objFTemp
    Dim objTextStream
    Dim lngSize
    On Error Resume Next
    Set objFSO = CreateObject("Scripting.FileSystemObject")
    Set objFTemp = objFSO.GetFile(FullFileName) ' First, we get the filesize
    lngSize = objFTemp.Size
    Set objFTemp = nothing
    fsoForReading = 1
    Set objTextStream = objFSO.OpenTextFile(FullFileName, fsoForReading)
    If OffsetBytes > 0 Then
        strBuff = objTextStream.Read(OffsetBytes - 1)
    End If
    If ReadBytes = -1 Then ' Get All!
        ReadFileBytes = objTextStream.Read(lngSize) ' ReadAll
    Else
        ReadFileBytes = objTextStream.Read(ReadBytes)
    End if
    objTextStream.Close
    Set objTextStream = Nothing
    Set objFSO = Nothing
End Function

FullFileName, OffsetBytes, ReadBytes