Stream 和 byte[] 之间的转换

来源：互联网发布：淘宝特卖商城编辑：程序博客网时间：2024/05/20 23:07

一. 二进制转换成图片

1
2
3
4
5
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
2
3
System.Text.UnicodeEncoding converter = new System.Text.UnicodeEncoding();
　　byte[] inputBytes =converter.GetBytes(inputString);
　　string inputString = converter.GetString(inputBytes);

1
2
3
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

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
/// 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

1
2
3
4
5
6
7
8
9
10
11
12
13
14
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

1
2
3
4
5
6
7
8
9
10
11
12
13
14
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;
}

六

1
2
3
4
5
6
//Bitmap 转化为 Byte[]
                Bitmap BitReturn = new Bitmap();
                byte[] bReturn = null;
                MemoryStream ms = new MemoryStream();
                BitReturn.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
                bReturn = ms.GetBuffer();
七
文件存储Dictionary或其它容器信息
public static int Save_Room_Information()               //保存信息        {            FileStream fr = new FileStream("Room.bin", FileMode.OpenOrCreate);            BinaryFormatter st = new BinaryFormatter();            st.Serialize(fr, RoomInformation);            fr.Close();            return 1;        }        public static int Load_Room_Information()               //载入信息        {            FileStream fr = new FileStream("Room.bin", FileMode.Open);            BinaryFormatter st = new BinaryFormatter();            RoomInformation = (Dictionary<int,List<Film>>)st.Deserialize(fr);                  fr.close();                  return 1;            }
    

        转载自：http://www.cnblogs.com/warioland/archive/2012/03/06/2381355.html

0 0