壓縮文件

public void YaSuo()
        {
            using (FileStream fsRead = File.OpenRead(@"F:\MVC5_Demo\Project4YaSuo\Project4YaSuo\Files\筆記.txt"))
            {
                //創建寫入文件的流
                using (FileStream fsWrite = File.OpenWrite(@"F:\MVC5_Demo\Project4YaSuo\Project4YaSuo\Files\yasuo.rar
 
"))
                {
                    //創建壓縮流
                    using (GZipStream zipStream = new GZipStream(fsWrite, CompressionMode.Compress))
                    {
                        //每次讀取1024byte
                        byte[] byts = new byte[1024 * 10];
                        int len = 0;
                        
 
while ((len = fsRead.Read(byts, 0, byts.Length)) > 0)
                        {
                            zipStream.Write(byts, 0, len);//通過壓縮流寫入文件
                        }
                    }
                }
            }
        }

解壓文件

public void JieYa()
        {
            //讀取壓縮文件
 

            using (FileStream fsRead = File.OpenRead(@"F:\MVC5_Demo\Project4YaSuo\Project4YaSuo\Files\yasuo.rar"))
            {
                //創建壓縮流
                using (GZipStream gzipStream = new GZipStream(fsRead, CompressionMode.Decompress))
                {
                    using (FileStream fsWrite = File.OpenWrite(@"F:\MVC5_Demo\Project4YaSuo\Project4YaSuo\Files\筆記.txt"))
                    {
                        byte[] byts = new byte[1024 * 10];
                        int len = 0;
                        //寫入新文件
                        while ((len = gzipStream.Read(byts, 0, byts.Length)) > 0)
                        {
                            fsWrite.Write(byts, 0, len);
                        }
                    }

                }
            }
        }

C# 解壓縮文件