C# ZipArchive.CreateZipFile方法代码示例

        // This is the Zip Implementation Method
partial         void Zip(NSObject sender)
        {
            // Get the current working directory and set the desired name of the Zip File
            string path = Environment.CurrentDirectory;
            string fileName = "/file.zip";

            theZipFile = path + fileName;

            // Create a new instance of ZipArchive
            ZipArchive zip = new ZipArchive();

            // You can subscribe to OnError event so you can handle
            // any errors situations
            zip.OnError += (object s, EventArgs e) =>
            {
                string error = s as String;
                Console.WriteLine("Error:" + error);
            };

            // Create the Zip file on the desired path
            zip.CreateZipFile(theZipFile);

            // Add the files you want zip, this will return "true" if
            // the file was successfully added to zip file
            bool added = zip.AddFile(path + "/xamarin.jpg", "xamarin.jpg");

            // Dont forget to close the zip file
            zip.CloseZipFile();

            if(added)
                new UIAlertView("Info", "Success: " + theZipFile, null, "Great", null).Show();
            else
                new UIAlertView("Info", "Something went wrong", null, "Ok", null).Show();

            Console.WriteLine(theZipFile);
        }

        public int WriteDataToZipFile(string zipPath, CancellationToken cancellationToken, Action<string, double> progressCallback)
        {
            // create a zip file to hold all data
            #if __ANDROID__
            ZipOutputStream zipFile = null;
            #elif __IOS__
            ZipArchive zipFile = null;
            #endif

            // write all data to separate JSON files. zip files for convenience.
            string directory = null;
            Dictionary<string, StreamWriter> datumTypeFile = new Dictionary<string, StreamWriter>();

            try
            {
                string directoryName = Protocol.Name + "_Data_" + DateTime.UtcNow.ToShortDateString() + "_" + DateTime.UtcNow.ToShortTimeString();
                directoryName = new Regex("[^a-zA-Z0-9]").Replace(directoryName, "_");
                directory = Path.Combine(SensusServiceHelper.SHARE_DIRECTORY, directoryName);

                if (Directory.Exists(directory))
                    Directory.Delete(directory, true);

                Directory.CreateDirectory(directory);

                if (progressCallback != null)
                    progressCallback("Gathering data...", 0);

                int totalDataCount = 0;

                foreach (Tuple<string, string> datumTypeLine in GetDataLinesToWrite(cancellationToken, progressCallback))
                {
                    string datumType = datumTypeLine.Item1;
                    string line = datumTypeLine.Item2;

                    StreamWriter file;
                    if (datumTypeFile.TryGetValue(datumType, out file))
                        file.WriteLine(",");
                    else
                    {
                        file = new StreamWriter(Path.Combine(directory, datumType + ".json"));
                        file.WriteLine("[");
                        datumTypeFile.Add(datumType, file);
                    }

                    file.Write(line);
                    ++totalDataCount;
                }

                // close all files
                foreach (StreamWriter file in datumTypeFile.Values)
                {
                    file.Write(Environment.NewLine + "]");
                    file.Close();
                }

                cancellationToken.ThrowIfCancellationRequested();

                if (progressCallback != null)
                    progressCallback("Compressing data...", 0);

                #if __ANDROID__

                directoryName += '/';
                zipFile = new ZipOutputStream(new FileStream(zipPath, FileMode.Create, FileAccess.Write));
                zipFile.PutNextEntry(new ZipEntry(directoryName));

                int dataWritten = 0;

                foreach (string path in Directory.GetFiles(directory))
                {
                    // start json file for data of current type
                    zipFile.PutNextEntry(new ZipEntry(directoryName + Path.GetFileName(path)));

                    using (StreamReader file = new StreamReader(path))
                    {
                        string line;
                        while ((line = file.ReadLine()) != null)
                        {
                            if (progressCallback != null && totalDataCount >= 10 && (dataWritten % (totalDataCount / 10)) == 0)
                                progressCallback(null, dataWritten / (double)totalDataCount);

                            cancellationToken.ThrowIfCancellationRequested();

                            zipFile.Write(file.CurrentEncoding.GetBytes(line + Environment.NewLine));

                            if (line != "[" && line != "]")
                                ++dataWritten;
                        }
                    }

                    zipFile.CloseEntry();
                    System.IO.File.Delete(path);
                }

                // close entry for directory
                zipFile.CloseEntry();

                #elif __IOS__
                zipFile = new ZipArchive();
                zipFile.CreateZipFile(zipPath);
//.........这里部分代码省略.........