C# DeflateStream CopyTo MemoryStream
正在压缩和解压缩C# DeflateStream CopyTo MemoryStream,c#,memorystream,deflate,C#,Memorystream,Deflate,正在压缩和解压缩MemoryStream,但CopyTo似乎无法正常工作?为什么?如何解决这个问题 public static MemoryStream Compress(MemoryStream originalStream) { Console.WriteLine("Original before compressing size: {0}", originalStream.Length.ToString()); MemoryStream compressedMemorySt
MemoryStream
,但CopyTo
似乎无法正常工作?为什么?如何解决这个问题
public static MemoryStream Compress(MemoryStream originalStream)
{
Console.WriteLine("Original before compressing size: {0}", originalStream.Length.ToString());
MemoryStream compressedMemoryStream = new MemoryStream();
using (DeflateStream deflateStream = new DeflateStream(compressedMemoryStream, CompressionMode.Compress, true))
{
originalStream.CopyTo(deflateStream);
}
Console.WriteLine("Compressed size: {0}", compressedMemoryStream.Length.ToString());
return compressedMemoryStream;
}
public static void Decompress(MemoryStream compressedStream)
{
Console.WriteLine("Compressed before decompressing size: {0}", compressedStream.Length.ToString());
using (MemoryStream decompressedFileStream = new MemoryStream())
{
using (DeflateStream decompressionStream = new DeflateStream(compressedStream, CompressionMode.Decompress, true))
{
decompressionStream.CopyTo(decompressedFileStream);
}
Console.WriteLine("Decompressed size: {0}", decompressedFileStream.Length.ToString());
}
}
输出:
Original before compressing size: 5184054
Compressed size: 0
Compressed before decompressing size: 0
Decompressed size: 0
CopyTo
开始从源流的当前位置复制字节
由于您发布的结果压缩流大小为0,我非常确定originalStream
位于流的末尾,因此没有复制/压缩字节
确保位置为0
,以便它可以找到要复制并压缩到流中的任何数据
正如@xanatos所提到的,这同样适用于
解压缩
,因此在解压缩之前,请确保压缩流
也位于0。在开始复制之前,请确保原始流位于位置=0
。否则它将找不到任何要复制的内容,因为它位于流的末尾(因为您以前向它写入了数据?)。@RayKoopa,是的,您是对的!贴上答案我会接受的@A191919,记住将新的内存流compressedMemoryStream
移动到末尾的位置=0