首页 > 代码库 > C# 文件流相关操作

C# 文件流相关操作

二进制转换成图片:

 MemoryStream ms = new MemoryStream(bytes);ms.Position = 0;Image img = Image.FromStream(ms);ms.Close();this.pictureBox1.Image

C#中byte[]与string的转换代码:

System.Text.UnicodeEncoding converter = new System.Text.UnicodeEncoding();  byte[] inputBytes =converter.GetBytes(inputString);  string inputString = converter.GetString(inputBytes);string inputString = System.Convert.ToBase64String(inputBytes);  byte[] inputBytes = System.Convert.FromBase64String(inputString);FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);

C# Stream 和 byte[] 之间的转换:

public byte[] StreamToBytes(Stream stream){    byte[] bytes = new byte[stream.Length];    stream.Read(bytes, 0, bytes.Length);    // 设置当前流的位置为流的开始    stream.Seek(0, SeekOrigin.Begin);    return bytes;}

将 byte[] 转成 Stream:

public Stream BytesToStream(byte[] bytes){    Stream stream = new MemoryStream(bytes);    return stream;}

将 Stream 写入文件:

 

public void StreamToFile(Stream stream,string fileName){    // 把 Stream 转换成 byte[]    byte[] bytes = new byte[stream.Length];    stream.Read(bytes, 0, bytes.Length);    // 设置当前流的位置为流的开始    stream.Seek(0, SeekOrigin.Begin);    // 把 byte[] 写入文件    FileStream fs = new FileStream(fileName, FileMode.Create);    BinaryWriter bw = new BinaryWriter(fs);    bw.Write(bytes);    bw.Close();    fs.Close();}

 

从文件读取 Stream:

public Stream FileToStream(string fileName){                // 打开文件    FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);    // 读取文件的 byte[]    byte[] bytes = new byte[fileStream.Length];    fileStream.Read(bytes, 0, bytes.Length);    fileStream.Close();    // 把 byte[] 转换成 Stream    Stream stream = new MemoryStream(bytes);    return stream;}

 

转自:http://www.cnblogs.com/Mr_JinRui/archive/2010/07/05/1771184.html

 

C# 文件流相关操作