【Rar压缩解压类库】C#为数不多的支持Net2.0的Rar操作类库

**乔克斯** · 发表于 2016-5-19 18:53:37

说明：
最近用net 2.0开发萝莉云，遇到个问题。下载下来的字幕rar文件。无法解压！不管是DotNetZip还是ICSharpCode.SharpZipLib 都无法解压rar！我凑，不科学。然后找来找去。终于找到这个支持2.0，且支持rar的方法。需要可以拿去。案例demo还没写。不过有调用代码。

目录截图：

调用代码：

[C#] 纯文本查看 复制代码

        #region 7zZip压缩、解压方法
        /// <summary>
        /// 压缩文件 
        /// </summary>
        /// <param name="objectPathName">压缩对象（即可以是文件夹|也可以是文件）</param>
        /// <param name="objectZipPathName">保存压缩文件的路径</param>
        /// <param name="strPassword">加密码</param>
        /// 测试压缩文件夹：压缩文件（objectZipPathName）不能放在被压缩文件（objectPathName）内，否则报“文件夹被另一进程使用中”错误。
        /// <returns></returns>
        public CompressResults Compress7zZip(String objectPathName, String objectZipPathName, String strPassword) {
            try {
                //http://sevenzipsharp.codeplex.com/releases/view/51254 下载sevenzipsharp.dll
                //SevenZipSharp.dll、zLib1.dll、7z.dll必须同时存在，否则常报“加载7z.dll错误”
                string libPath = Application.StartupPath + @"\7z.dll";
                SevenZip.SevenZipCompressor.SetLibraryPath(libPath);
                SevenZip.SevenZipCompressor sevenZipCompressor = new SevenZip.SevenZipCompressor();
                sevenZipCompressor.CompressionLevel = SevenZip.CompressionLevel.Fast;
                sevenZipCompressor.ArchiveFormat = SevenZip.OutArchiveFormat.Zip;

                //被压缩对象是否存在
                int beforeObjectNameIndex = objectPathName.LastIndexOf('\\');
                string objectPath = objectPathName.Substring(0, beforeObjectNameIndex);
                //System.IO.DirectoryInfo directoryInfo = new System.IO.DirectoryInfo(objectPathName);
                if (Directory.Exists(objectPathName)/*directoryInfo.Exists*/ == false && System.IO.File.Exists(objectPathName) == false) {
                    return CompressResults.SourceObjectNotExist;
                }
                int beforeObjectRarNameIndex = objectZipPathName.LastIndexOf('\\');
                int objectRarNameIndex = beforeObjectRarNameIndex + 1;
                //string objectZipName = objectZipPathName.Substring(objectRarNameIndex);
                string objectZipPath = objectZipPathName.Substring(0, beforeObjectRarNameIndex);
                //目标目录、文件是否存在
                if (System.IO.Directory.Exists(objectZipPath) == false) {
                    System.IO.Directory.CreateDirectory(objectZipPath);
                } else if (System.IO.File.Exists(objectZipPathName) == true) {
                    System.IO.File.Delete(objectZipPathName);
                }

                if (Directory.Exists(objectPathName))       //压缩对象是文件夹
                {
                    if (String.IsNullOrEmpty(strPassword)) {
                        sevenZipCompressor.CompressDirectory(objectPathName, objectZipPathName);
                    } else {
                        sevenZipCompressor.CompressDirectory(objectPathName, objectZipPathName, strPassword);
                    }
                } else        //压缩对象是文件 无加密方式
                {
                    sevenZipCompressor.CompressFiles(objectZipPathName, objectPathName);
                }

                return CompressResults.Success;
            } catch (Exception ex) {
                MessageBox.Show("压缩文件失败！" + ex.Message);
                return CompressResults.UnKnown;
            }
        }

        /// <summary>
        /// 解压缩文件
        /// </summary>
        /// <param name="zipFilePathName">zip文件具体路径+名</param>
        /// <param name="unCompressDir">解压路径</param>
        /// <param name="strPassword">解密码</param>
        /// <returns></returns>
        public UnCompressResults UnCompress7zZip(String zipFilePathName, String unCompressDir, String strPassword) {
            try {
                //SevenZipSharp.dll、zLib1.dll、7z.dll必须同时存在，否则常报“加载7z.dll错误”而项目引用时，只引用SevenZipSharp.dll就可以了
                string libPath = Application.StartupPath + @"\7z.dll";
                SevenZip.SevenZipCompressor.SetLibraryPath(libPath);

                bool isFileExist = File.Exists(zipFilePathName);
                if (false == isFileExist) {
                    MessageBox.Show("解压文件不存在！" + zipFilePathName);
                    return UnCompressResults.SourceObjectNotExist;
                }
                File.SetAttributes(zipFilePathName, FileAttributes.Normal);     //去掉只读属性

                if (Directory.Exists(unCompressDir) == false) {
                    Directory.CreateDirectory(unCompressDir);
                }

                SevenZip.SevenZipExtractor sevenZipExtractor;
                if (String.IsNullOrEmpty(strPassword)) {
                    sevenZipExtractor = new SevenZip.SevenZipExtractor(zipFilePathName);
                } else {
                    sevenZipExtractor = new SevenZip.SevenZipExtractor(zipFilePathName, strPassword);
                }

                sevenZipExtractor.ExtractArchive(unCompressDir);
                sevenZipExtractor.Dispose();
                return UnCompressResults.Success;
            } catch (Exception ex) {
                MessageBox.Show("解压缩文件失败！" + ex.Message);
                return UnCompressResults.UnKnown;
            }
        }
        #endregion

案例源码下载：

下载地址