常見並常用的stream一共有

檔案流（FileStream），

記憶體流（MemoryStream），

壓縮流（GZipStream），

加密流（CrypToStream），

網路流（NetworkStream）；

1.檔案流（讀取檔案流-輸出檔案流）FileStream

using(Streamstreamwrite=new FileStream(@"D:\BaiduYunDownload\45.avi",FileMode.OpenOrCreate))

{

using (Stream streamread = new FileStream(@"D:\BaiduYunDownload\xiawu3.avi", FileMode.Open))

{

byte[] ss=new byte[1024*1024*4];

int len;

while ((len = streamread.Read(ss, 0, ss.Length)) > 0)

{

streamwrite.Write(ss, 0, len);

Thread.Sleep(1000);

}

}

}

2. 記憶體流（MemoryStream）

string strtxt="dasdfdsfsd";

byte[] bytetxt = Encoding.UTF8.GetBytes(strtxt);

Stream memstream = new MemoryStream();

memstream.Write(bytetxt, 0, bytetxt.Length);

3.壓縮流（GZipStream），

壓縮：

string s = "dfdfdf";

using (FileStream filestream = File.OpenWrite(@"c:\2.txt"))

{

using (GZipStream zipstream = new GZipStream(filestream, CompressionMode.Compress))

{

byte[] bytes = Encoding.UTF8.GetBytes(s);

zipstream.Write(bytes, 0, bytes.Length);

}

}

解壓：

using (FileStream filestream = File.OpenRead(@"c:\2.txt"))

{

using (GZipStream zipstream = new GZipStream(filestream, CompressionMode.Decompress))

{

using (FileStream filestreamwrite = new FileStream(@"c:\3.txt", FileMode.OpenOrCreate))

{

byte[] bytes = new byte[1024 * 1024 * 4];

int length;

while ((length = zipstream.Read(bytes, 0, bytes.Length)) > 0)

{

filestreamwrite.Write(bytes, 0, length);

}

}

}

}