我想在 C# 中压缩一个文件和一个目录。我在互联网上找到了一些解决方案,但它们太复杂了,我无法在我的项目中运行它们。有人可以建议我一个清晰有效的解决方案吗?
10 回答
您可以GZipStream
在System.IO.Compression
命名空间中使用
.NET 2.0.
public static void CompressFile(string path)
{
FileStream sourceFile = File.OpenRead(path);
FileStream destinationFile = File.Create(path + ".gz");
byte[] buffer = new byte[sourceFile.Length];
sourceFile.Read(buffer, 0, buffer.Length);
using (GZipStream output = new GZipStream(destinationFile,
CompressionMode.Compress))
{
Console.WriteLine("Compressing {0} to {1}.", sourceFile.Name,
destinationFile.Name, false);
output.Write(buffer, 0, buffer.Length);
}
// Close the files.
sourceFile.Close();
destinationFile.Close();
}
.NET 4
public static void Compress(FileInfo fi)
{
// Get the stream of the source file.
using (FileStream inFile = fi.OpenRead())
{
// Prevent compressing hidden and
// already compressed files.
if ((File.GetAttributes(fi.FullName)
& FileAttributes.Hidden)
!= FileAttributes.Hidden & fi.Extension != ".gz")
{
// Create the compressed file.
using (FileStream outFile =
File.Create(fi.FullName + ".gz"))
{
using (GZipStream Compress =
new GZipStream(outFile,
CompressionMode.Compress))
{
// Copy the source file into
// the compression stream.
inFile.CopyTo(Compress);
Console.WriteLine("Compressed {0} from {1} to {2} bytes.",
fi.Name, fi.Length.ToString(), outFile.Length.ToString());
}
}
}
}
}
我添加了这个答案,因为我找到了比任何现有答案更简单的方法:
代码:
using (ZipFile zip = new ZipFile())
{
zip.AddFile("C:\test\test.txt");
zip.AddFile("C:\test\test2.txt");
zip.Save("C:\output.zip");
}
如果您不希望在 zip 文件中镜像原始文件夹结构,请查看 AddFile() 和 AddFolder() 等的覆盖。
对于 .Net Framework 4.5,这是我发现的最清晰的示例:
using System;
using System.IO;
using System.IO.Compression;
namespace ConsoleApplication
{
class Program
{
static void Main(string[] args)
{
string startPath = @"c:\example\start";
string zipPath = @"c:\example\result.zip";
string extractPath = @"c:\example\extract";
ZipFile.CreateFromDirectory(startPath, zipPath);
ZipFile.ExtractToDirectory(zipPath, extractPath);
}
}
}
您需要添加对 System.IO.Compression.FileSystem 的引用
来自:https ://docs.microsoft.com/en-us/dotnet/standard/io/how-to-compress-and-extract-files
System.IO.Packaging
有一个名为的内置类ZipPackage
:
http://msdn.microsoft.com/en-us/library/system.io.packaging.zippackage(v=vs.100).aspx
使用 DotNetZip http://dotnetzip.codeplex.com/, ZipFile 类上有一个 AddDirectory() 方法可以满足您的需求:
using (var zip = new Ionic.Zip.ZipFile())
{
zip.AddDirectory("DirectoryOnDisk", "rootInZipFile");
zip.Save("MyFile.zip");
}
邦尼继续...
您可以只使用 ms-dos 命令行程序 compact.exe。查看 cmd 中的参数 compact.exe 并使用 .NET 方法 Process.Start() 启动此进程。
只需使用以下代码压缩文件。
public void Compressfile()
{
string fileName = "Text.txt";
string sourcePath = @"C:\SMSDBBACKUP";
DirectoryInfo di = new DirectoryInfo(sourcePath);
foreach (FileInfo fi in di.GetFiles())
{
//for specific file
if (fi.ToString() == fileName)
{
Compress(fi);
}
}
}
public static void Compress(FileInfo fi)
{
// Get the stream of the source file.
using (FileStream inFile = fi.OpenRead())
{
// Prevent compressing hidden and
// already compressed files.
if ((File.GetAttributes(fi.FullName)
& FileAttributes.Hidden)
!= FileAttributes.Hidden & fi.Extension != ".gz")
{
// Create the compressed file.
using (FileStream outFile =
File.Create(fi.FullName + ".gz"))
{
using (GZipStream Compress =
new GZipStream(outFile,
CompressionMode.Compress))
{
// Copy the source file into
// the compression stream.
inFile.CopyTo(Compress);
Console.WriteLine("Compressed {0} from {1} to {2} bytes.",
fi.Name, fi.Length.ToString(), outFile.Length.ToString());
}
}
}
}
}
}
使用http://dotnetzip.codeplex.com/压缩文件或目录,没有内置类可以直接在 .NET 中完成
public static void CompressFile(string path)
{
FileStream sourceFile = File.OpenRead(path);
FileStream destinationFile = File.Create(path + ".gz");
byte[] buffer = new byte[sourceFile.Length];
sourceFile.Read(buffer, 0, buffer.Length);
using (GZipStream output = new GZipStream(destinationFile,
CompressionMode.Compress))
{
Console.WriteLine("Compressing {0} to {1}.", sourceFile.Name,
destinationFile.Name, false);
output.Write(buffer, 0, buffer.Length);
}
// Close the files.
sourceFile.Close();
destinationFile.Close();
}