一. 二进制转换成图片
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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.
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System.Text.UnicodeEncoding converter = new System.Text.UnicodeEncoding(); byte[] inputBytes =converter.GetBytes(inputString); string inputString = converter.GetString(inputBytes); |
2.
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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
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/// 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 Streampublic 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
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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
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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
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//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(); |
