zip文件，带有c#MSDN错误 [英] zip file with c# MSDN error

问题描述

using System;
using System.IO;
using System.IO.Compression;

namespace zip
{

 public class Program
    {

        public static void Main()
        {
            // Path to directory of files to compress and decompress.
            string dirpath = @"c:\users\public\reports";

            DirectoryInfo di = new DirectoryInfo(dirpath);

            // Compress the directory's files.
            foreach (FileInfo fi in di.GetFiles())
            {
                Compress(fi);

            }

            // Decompress all *.gz files in the directory.
            foreach (FileInfo fi in di.GetFiles("*.gz"))
            {
                Decompress(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());
                        }
                    }
                }
            }
        }

        public static void Decompress(FileInfo fi)
        {
            // Get the stream of the source file.
            using (FileStream inFile = fi.OpenRead())
            {
                // Get original file extension, for example
                // "doc" from report.doc.gz.
                string curFile = fi.FullName;
                string origName = curFile.Remove(curFile.Length - 
                        fi.Extension.Length);

                //Create the decompressed file.
                using (FileStream outFile = File.Create(origName))
                {
                    using (GZipStream Decompress = new GZipStream(inFile,
                            CompressionMode.Decompress))
                    {
                        // Copy the decompression stream 
                        // into the output file.
                        Decompress.CopyTo(outFile);
                        
                        Console.WriteLine("Decompressed: {0}", fi.Name);

                    }
                }
            }
        }

    }
}

我从视觉帮助中获得了此代码，但是当尝试在Decompress.CopyTo
上给我错误时 复制到
找不到此
为什么?

i get this code from visual help but when try give me error on Decompress.CopyTo
copyto
not find this
why?

推荐答案

我刚刚尝试了您的程序，并且看起来很吸引人.您是否有关于错误消息的更多详细信息?还请说明您尝试在哪个版本的.NET框架中运行该版本，以及您的VS版本.

我在VS 2010，OS:Vista Ultimate上使用C#.NET 4.0 Clientprofile进行了尝试.
问候，
Manfred

I just tried out your program and works like a charm. Do you have some more details on the error message? Please also state in what version of the .NET framework you tried to run this and also your VS version.

I tried it with C# .NET 4.0 Clientprofile on VS 2010, OS: Vista Ultimate.

Regards,
Manfred

太糟糕了，您没有正确报告错误.

这是一个.NET Framework版本(更确切地说是捆绑的GOC):该库没有v.4.0之前版本的CopyTo方法.我尝试使用v.3.5进行编译-无法编译； 4.0确实可以.为了进行确认，当它与VS 2010一起编译时，我将目标更改为3.5 －不进行编译.我确定您可以实现缺少的方法.

Too bad you did not report the error properly.

This is a .NET Framework version (more exactly it''s GOC as bundled): the library does not have CopyTo methods for verions prior to v.4.0. I tried to compile with v.3.5 - does not compile; with 4.0 it does. For confirmation, when it compiles with VS 2010, I change the target to 3.5 -- it does not compile. I''m sure you could implement the missing methods.

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