Stream StreamWriter StreamReader FileStream 的问题

[wwy12321]

把d:\333.doc 复制到d:\444.doc 我用这种文件流的方法,不用file.copy 为什么复制完了以后444.doc 变成乱码的了?本人还是新手,请多指教.

string c;

Stream datastream = new FileStream("d:\\444.doc", FileMode.Create);
StreamWriter nfile = new StreamWriter(datastream, Encoding.ASCII);
using (StreamReader ofile = new StreamReader("d:\\333.doc", Encoding.ASCII))
{
while ((c=ofile.ReadLine())!=null)
{
//Console.WriteLine(ofile.ReadLine().Length);
nfile.WriteLine(c);
Console.WriteLine(c);
}
ofile.Close();
nfile.Close();
}

[机器人]

把你的Encoding这个参数都去掉，用你默认的Encoding就不会乱码了。

[wwy12321]

我是都去掉了啊,
Stream datastream = new FileStream("d:\\444.doc", FileMode.Create);
StreamWriter nfile = new StreamWriter(datastream);
using (StreamReader ofile = new StreamReader("d:\\333.doc"))
{
while ((c=ofile.ReadLine())!=null)
{
//Console.WriteLine(ofile.ReadLine().Length);
nfile.WriteLine(c);
Console.WriteLine(c);
}
ofile.Close();
nfile.Close();
}
变成这样了
但是还是乱码,而且一个24k 的文件复制完了以后变成28k ,比原来还多了4k 呵

[机器人]

恩，Word本身是带格式的。
所以直接用StreamReader不行，你换一个BinaryReader看看。

[机器人]

Using fs As IO.FileStream = New IO.FileStream("d:\2.doc", IO.FileMode.Create)
            Using f As IO.FileStream = New IO.FileStream("d:\1.doc", IO.FileMode.Open)
                Dim byteData(1024) As Byte
                Dim intLen As Integer = f.Read(byteData, 0, byteData.Length)
                While intLen > 0
                    fs.Write(byteData, 0, intLen)
                    intLen = f.Read(byteData, 0, byteData.Length)
                End While
            End Using
        End Using

[机器人]

using( FileStream fs = new FileStream("d:\2.doc", FileMode.Create) )
{
   using( FileStream f = new FileStream("d:\1.doc", FileMode.Open) )
   {
       byte[1024] byteData;
       int length = f.Read(byteData, 0, byteData.Length);
       while(length > 0)
       {
          fs.Write(byteData, 0, length);
          length = f.Read(byteData, 0, byteData.Length);
       }
   }
}

[viena]

StreamWriter、StreamReader是用来读写纯文本文件的
5楼正解，但缓冲区大小1024太小了，内部缓冲区大小是4096吧~

[xujun1979]

StreamReader ofile = new StreamReader("d:\\aa.doc", Encoding.GetEncoding("gb2312"));
FileStream fs = new FileStream("d:\\bb.doc", FileMode.Create);
StreamWriter wFile = new StreamWriter(fs,Encoding.GetEncoding("gb2312"));
wFile.Write(ofile.ReadToEnd());
ofile.Close();
wFile.Close();

[机器人]

viena 眼睛好利阿。我随手写的1024。。。是小了点。

[王集鹄]

ASCII的字节范围是0-127，大于127的字节不能处理，所以成乱码了。。。。