C# Stream 和 byte[] 之間的轉換

一. 二進制轉換成圖片

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

二. C#中byte[]與string的轉換代碼

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[] 之間的轉換

/// 將 Stream 轉成 byte[]public byte[] StreamToBytes(Stream stream){    byte[] bytes = new byte[stream.Length];    stream.Read(bytes, 0, bytes.Length);    // 設置當前流的位置為流的開始    stream.Seek(0, SeekOrigin.Begin);    return bytes;}/// 將 byte[] 轉成 Streampublic Stream BytesToStream(byte[] bytes){    Stream stream = new MemoryStream(bytes);    return stream;}

四. Stream 和 文件之間的轉換

將 Stream 寫入文件

public void StreamToFile(Stream stream,string fileName){    // 把 Stream 轉換成 byte[]    byte[] bytes = new byte[stream.Length];    stream.Read(bytes, 0, bytes.Length);    // 設置當前流的位置為流的開始    stream.Seek(0, SeekOrigin.Begin);    // 把 byte[] 寫入文件    FileStream fs = new FileStream(fileName, FileMode.Create);    BinaryWriter bw = new BinaryWriter(fs);    bw.Write(bytes);    bw.Close();    fs.Close();}

五. 從文件讀取 Stream

public Stream FileToStream(string fileName){                // 打開文件    FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);    // 讀取文件的 byte[]    byte[] bytes = new byte[fileStream.Length];    fileStream.Read(bytes, 0, bytes.Length);    fileStream.Close();    // 把 byte[] 轉換成 Stream    Stream stream = new MemoryStream(bytes);    return stream;}

六

//Bitmap 轉化為 Byte[]                Bitmap BitReturn = new Bitmap();                byte[] bReturn = null;                MemoryStream ms = new MemoryStream();                BitReturn.Save(ms, System.Drawing.Imaging.ImageFormat.Png);                bReturn = ms.GetBuffer();