文件与二进制流互转
一. 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
二. C#中byte[]与string的转换代码
1、System.Text.UnicodeEncoding converter
= new System.Text.UnicodeEncoding();
byte[] inputBytes =converter.GetBytes(inputString);
string inputString = converter.GetString(inputBytes);
2、string inputString =
System.Convert.ToBase64String(inputBytes);
byte[] inputBytes =
System.Convert.FromBase64String(inputString);
FileStream fileStream = new FileStream(fileName, FileMode.Open,
FileAccess.Read, FileShare.Read);
三. C# Stream 和 byte[] 之间的转换
/// 将 Stream 转成 byte[]
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;
}
四. Stream 和 文件之间的转换
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();
}
五. 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[]
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