求助高手 如何分割文件?

[ACdk]

求助高手:
如何将比较大的文件分割成为许多小的文件?比如现在有个文件有3M 要将它分割成为3个1M的块用于传输,这段分割程序怎么写?还有将收到的小文件怎么拼装成原来的大文件该怎么写?

[rubygmm]

关注

[mzwww]

要通过程序实现吗？如果不是的话就有很多方法！比如压缩软件啦……=====

[水如烟]

StreamReader和StreamWriter我用得很少,按道理来说,
以字节方式来读写应该可以实现的吧.

[ACdk]

l;dfkgopd

[ineedchrist]

StreamReader和StreamWriter对文件进行操作，然后合并的时候用copy/b

[dalianu]

刚在一个Button的Click事件写了以下的代码,试试..好用^_^
Const FILE_PARTS As Integer = 5
'Test
Dim ReadFileStream As System.IO.FileStream '文件流
Dim WriteFileStream As System.IO.FileStream '文件流
Dim FileInfo As System.IO.FileInfo '文件信息类
Dim Path As System.IO.Path '包含文件或目录路径信息类
Dim FileShare As System.IO.FileShare
Dim FileAccess As System.IO.FileAccess
Dim BinaryReader As System.IO.BinaryReader
Dim BinaryWriter As System.IO.BinaryWriter
Dim BinaryByte() As Byte
Dim BinarySize As Long

FileInfo = New System.IO.FileInfo(M_strFilePath)

BinarySize = FileInfo.Length() / FILE_PARTS
'假如文件分割为5段'''''读取流
ReadFileStream = New System.IO.FileStream(M_strFilePath, IO.FileMode.Open, IO.FileAccess.Read, IO.FileShare.None)
'取得二进制文件
BinaryReader = New System.IO.BinaryReader(ReadFileStream)


For i As Integer = 0 To FILE_PARTS - 1

WriteFileStream = New System.IO.FileStream(M_strFolderPath + "\" + i.ToString + ".dlu", IO.FileMode.OpenOrCreate)
BinaryWriter = New System.IO.BinaryWriter(WriteFileStream)

BinaryByte = BinaryReader.ReadBytes(BinarySize)
BinaryWriter.Write(BinaryByte)

BinaryWriter.Close()
WriteFileStream.Close()
Next

BinaryReader.Close()

ReadFileStream.Close()

这里也有个关于Windows的问题,一个文件在桌面放置和在其他盘下放置的属性中的"占用空间"大小是不一样的....大家试试,是不是这样,哪位知道为什么?