我要评论在.net 4.5中新加入的压缩的命名空间和方法。可以抛弃icsharpcode.sharpziplib.dll 这个类库了。性能上不相上下。但是能够大大简化你的代码。如果开始使用.net framework4.5 做压缩不妨试试自带的压缩方法.
传统使用icsharpcode.sharpziplib.dll 所写的代码。
static void main(string[] args)
{
stopwatch watch = new stopwatch();
watch.start();
string path = @"e:\";
compress(directory.getfiles(path), @"f:\4.0.zip");
watch.stop();
console.writeline("消耗时间:{0}", watch.elapsedmilliseconds);
fileinfo f = new fileinfo(@"f:\4.0.zip");
console.writeline("文件大小{0}", f.length);
}
static void compress(string[] filepaths, string zipfilepath)
{
byte[] _buffer = new byte[4096];
if (!directory.exists(zipfilepath))
directory.createdirectory(path.getdirectoryname(zipfilepath));
using (zipoutputstream zip = new zipoutputstream(file.create(zipfilepath)))
{
foreach (var item in filepaths)
{
if (!file.exists(item))
{
console.writeline("the file {0} not exist!", item);
}
else
{
zipentry entry = new zipentry(path.getfilename(item));
entry.datetime = datetime.now;
zip.putnextentry(entry);
using (filestream fs = file.openread(item))
{
int sourcebytes;
do
{
sourcebytes = fs.read(_buffer, 0, _buffer.length);
zip.write(_buffer, 0, sourcebytes);
} while (sourcebytes > 0);
}
}
}
zip.finish();
zip.close();
}
}
使用.net framework 4.5中自带的压缩。
static void main(string[] args)
{
stopwatch watch = new stopwatch();
watch.start();
string path = @"e:\";
compress(path, @"f:\4.5.zip");
watch.stop();
console.writeline("消耗时间:{0}", watch.elapsedmilliseconds);
fileinfo f = new fileinfo(@"f:\4.5.zip");
console.writeline("文件大小{0}", f.length);
}
static void compress(string filepath, string zipfilepath)
{
zipfile.createfromdirectory(filepath, zipfilepath, compressionlevel.fastest, false);
}
怎么样代码是不是简洁了很多呢？
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