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C# Stream 和 byte[] 之间的转换

C# Stream 和 byte[] 之间的转换

作者: 萧非子 | 来源:发表于2017-11-08 09:15 被阅读196次

C# Stream 和 byte[] 之间的转换

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)
{
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byte[] bytes = new byte[stream.Length];
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stream.Read(bytes, 0, bytes.Length);
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// 设置当前流的位置为流的开始
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stream.Seek(0, SeekOrigin.Begin);
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return bytes;
}

/// 将 byte[] 转成 Stream

public Stream BytesToStream(byte[] bytes)
{
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Stream stream = new MemoryStream(bytes);
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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)
{
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// 把 Stream 转换成 byte[]
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byte[] bytes = new byte[stream.Length];
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stream.Read(bytes, 0, bytes.Length);
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// 设置当前流的位置为流的开始
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stream.Seek(0, SeekOrigin.Begin);
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// 把 byte[] 写入文件
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FileStream fs = new FileStream(fileName, FileMode.Create);
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BinaryWriter bw = new BinaryWriter(fs);
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bw.Write(bytes);
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bw.Close();
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fs.Close();
}

五.

从文件读取 Stream

public Stream FileToStream(string fileName)
{ <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;"> <wbr style="margin: 0px; padding: 0px;"><wbr style="margin: 0px; padding: 0px;">
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// 打开文件
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FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
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// 读取文件的 byte[]
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byte[] bytes = new byte[fileStream.Length];
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fileStream.Read(bytes, 0, bytes.Length);
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fileStream.Close();
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// 把 byte[] 转换成 Stream
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Stream stream = new MemoryStream(bytes);
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return stream;
}

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