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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
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