解压压缩文件

首先添加ICSharpCode.SharpZipLib.dll类库引用

 

实现解压文件代码

        /// <summary>
        /// 解压压缩文件
        /// </summary>
        /// <param name="filePath">带物理路径的压缩文件名</param>
        /// <param name="dirPath">解压到的目标路径</param>
        private  void Unzip(string filePath,string dirPath)
        {
            if(!Directory.Exists(dirPath))
            {
                //创建保存目录
                Directory.CreateDirectory(dirPath);
            }
            ZipInputStream stream = new ZipInputStream(File.OpenRead(filePath));
            ZipEntry entry;
            while((entry=stream.GetNextEntry())!=null)
            {

                var dirName= Path.GetDirectoryName(entry.Name);//返回指定路径字符串的目录信息
                var filename = Path.GetFileName(entry.Name);//返回指定路径字符串的文件名称

                //存在目录信息
                if (!string.IsNullOrEmpty(dirName))
                {
                    //创建文件目录
                    Directory.CreateDirectory(dirPath+dirName);
                }

                //存在文件
                if(!string.IsNullOrEmpty(filename))
                {
                    FileStream filestream = new FileStream(dirPath + entry.Name, FileMode.CreateNew);

                    byte[] data = new byte[1024];
                    int size = 1024;

                    //循环读取文件内容直到到达流结尾，则返回零跳出循环
                    while (true)
                    {
                        //从流中读取字节块并将该数据写入给定缓冲区中
                        size = stream.Read(data, 0, data.Length);
                        if (size > 0)
                        {
                            //将字节块写入文件流
                            filestream.Write(data, 0, data.Length);
                        }
                        else
                        {
                            //读取完毕
                            break;
                        }
                    }
                    filestream.Close();
                }
                  
            }
            
            

        }