关于C#中文件的操作

Question

http://www.c-sharpcorner.com/1/FileMergerAndSplitter.asp拆分,合并 文件

Answer 1

下面是文件组合和分割的代码,你可以仔细看看
using System;
using System.IO;private const string FILE_NAME="d:\\tests\\HelloWorld.exe";
private const string FILE_NAME1="d:\\tests\\HelloWorld1.exe";
private const string PATH="d:\\tests\\patch";
分解程序
   string PatchFileName;
   byte[] patch;
   int  Length,PLength,StreamLength;
   int i;
   i=0;
   PLength=1500;
   patch=new byte[PLength];
   if(!File.Exists(FILE_NAME))
return;
 FileStream fs=new FileStream(FILE_NAME,FileMode.Open,FileAccess.Read);
   Length=(int)fs.Length;
   BinaryReader br=new BinaryReader(fs);
   while(Length>0)
   {
     StreamLength=Math.Min(Length,PLength);
     PatchFileName=PATH+i.ToString();
     FileStream Pfs=new FileStream(PatchFileName,FileMode.CreateNew,FileAccess.Write);
     BinaryWriter Pbw=new BinaryWriter(Pfs);
     br.Read(patch,0,(int)StreamLength);
     Pbw.Write(patch,0,StreamLength);
     Pbw.Close();
     Pfs.Close();
     Length=Length-PLength;
     i++;
    }
br.Close();
fs.Close();
组合程序
分割
string PatchFileName;
byte[] patch;
int Length,PLength,i;
PLength=1500;
i=0;
patch=new byte[PLength];
FileStream fs=new FileStream(FILE_NAME1,FileMode.CreateNew,FileAccess.Write);
BinaryWriter bw=new BinaryWriter(fs);
PatchFileName=PATH+i.ToString();
while(File.Exists(PatchFileName))
  {
FileStream Pfs=new FileStream(PatchFileName,FileMode.Open,FileAccess.Read);
BinaryReader Pbr=new BinaryReader(Pfs);
Pbr.Read(patch,0,(int)Pfs.Length);
bw.Write(patch,0,(int)Pfs.Length);
Pbr.Close();
Pfs.Close();
i++;
PatchFileName=PATH+i.ToString();
}
bw.Close();
fs.Close();
}