如何分块读取二进制文件

[it_lwj]

我的功能是这样子的,getinfo.aspx?from=0&to=10&file=d:\12345.wmv，如果传这样的一个地址过去，我就能实现12345.wmv的文件0K读取10K，from和to这两个参数动态设置的，然后我在getinfo.aspx要输出两进制文件，请问那位高手会呀，帮帮忙。

[jcyluck]

顶

[it_lwj]

怎么都没人在呀

[it_lwj]

怎么都没人在呀

[lxhvc]

using System;
using System.IO;
class MyStream
{
private const string FILE_NAME = "Test.data";
public static void Main(String[] args)
{
// Create the new, empty data file.
if (File.Exists(FILE_NAME))
{
Console.WriteLine("{0} already exists!", FILE_NAME);
return;
}
FileStream fs = new FileStream(FILE_NAME, FileMode.CreateNew);
// Create the writer for data.
BinaryWriter w = new BinaryWriter(fs);
// Write data to Test.data.
for (int i = 0; i < 11; i++)
{
w.Write( (int) i);
}
w.Close();
fs.Close();
// Create the reader for data.
fs = new FileStream(FILE_NAME, FileMode.Open, FileAccess.Read);
BinaryReader r = new BinaryReader(fs);
// Read data from Test.data.
for (int i = 0; i < 11; i++)
{
Console.WriteLine(r.ReadInt32());
}
r.Close();
fs.Close();
}
}

[lxhvc]

using System;
using System.IO;
class MyStream
{
private const string FILE_NAME = "Test.data";
public static void Main(String[] args)
{
// Create the new, empty data file.
if (File.Exists(FILE_NAME))
{
Console.WriteLine("{0} already exists!", FILE_NAME);
return;
}
FileStream fs = new FileStream(FILE_NAME, FileMode.CreateNew);
// Create the writer for data.
BinaryWriter w = new BinaryWriter(fs);
// Write data to Test.data.
for (int i = 0; i < 11; i++)
{
w.Write( (int) i);
}
w.Close();
fs.Close();
// Create the reader for data.
fs = new FileStream(FILE_NAME, FileMode.Open, FileAccess.Read);
BinaryReader r = new BinaryReader(fs);
// Read data from Test.data.
for (int i = 0; i < 11; i++)
{
Console.WriteLine(r.ReadInt32());
}
r.Close();
fs.Close();
}
}

[cancerser]

int iT=1024;
int ifrom=0,ito=10;//取了自己变
Stream s=File.Open(@"d:\12345.wmv",FileMode.Open);
s.Position=ifrom*iT;
int ilen=(ito-ifrom)*1024;
byte[] bT=new byte[ilen];
s.Read(bT,0,ilen);
Response.BinaryWrite(b);
//应该是这意思吧

[buyaowen]

mark

[孟子E章]

分段读取得例子
http://support.microsoft.com/kb/812406/zh-cn

[孟子E章]

分段读取并下载的例子
http://support.microsoft.com/kb/812406/zh-cn

[it_lwj]

还在吗

[it_lwj]

int start = 0*1024;
int end = 10*1024;
string strfile = Request["file"];
FileStream fs=new FileStream (@"D:\free.rar",FileMode.Open );
fs.Seek( start , SeekOrigin.Begin );
byte[] bdate = new byte[end-start+1];
fs.Read( bdate , 0 , end-start+1 );
Response.BinaryWrite(bdate);
这样写对不对呀

[it_lwj]

fs.Seek( start , SeekOrigin.Begin );这句是什么意思那位知道呀

[zhaochong12]

http://community.csdn.net/Expert/TopicView3.asp?id=5117946

[lostowner]

UP

[hy98521]

那里开是读取

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