c#實現metro文件壓縮解壓示例

2020-01-24 02:45:31

字體：大中小

來源：轉載

供稿：網友

在1.zip中增加一張新圖片

StorageFile jpg = await KnownFolders.PicturesLibrary.GetFileAsync("1.jpg");
StorageFile zip = await KnownFolders.PicturesLibrary.GetFileAsync("1.zip");

            //把上面這句改成如下就成了壓縮文件
            //StorageFile zip = await KnownFolders.PicturesLibrary.CreateFileAsync(jpg.DisplayName+".zip",CreationCollisionOption.ReplaceExisting);
　　
　　
            using (ZipArchive archive = new ZipArchive((await zip.OpenAsync(FileAccessMode.ReadWrite)).AsStream(), ZipArchiveMode.Update))
            {
                ZipArchiveEntry readmeEntry = archive.CreateEntry(jpg.Name);
                byte[] buffer = WindowsRuntimeBufferExtensions.ToArray(await FileIO.ReadBufferAsync(jpg));
                using (var writer = readmeEntry.Open())
                {
                    await writer.WriteAsync(buffer, 0, buffer.Length);
                }
            }

把1.jpg從1.zip中刪除

復制代碼代碼如下:

StorageFile zip = await KnownFolders.PicturesLibrary.GetFileAsync("1.zip");
            using (ZipArchive archive = new ZipArchive((await zip.OpenAsync(FileAccessMode.ReadWrite)).AsStream(), ZipArchiveMode.Update))
            {
                //刪除文件
                archive.GetEntry("1.jpg").Delete();
            }

導出1.jpg,newFile為要到出的文件

復制代碼代碼如下:

StorageFile zip = await KnownFolders.PicturesLibrary.GetFileAsync("1.zip");
            using (ZipArchive archive = new ZipArchive((await zip.OpenAsync(FileAccessMode.ReadWrite)).AsStream(), ZipArchiveMode.Update))
            {
　　　　　　　　　　　　ZipArchiveEntry zipArchiveEntry = archive.GetEntry("1.jpg").
　　　　　　　　　　　　using (Stream fileData = zipArchiveEntry.Open())
                            {
                                StorageFile newFile = await KnownFolders.PicturesLibrary.CreateFileAsync(zipArchiveEntry.FullName, CreationCollisionOption.ReplaceExisting);
                                using (IRandomAccessStream newFileStream = await newFile.OpenAsync(FileAccessMode.ReadWrite))
                                {
                                    using (Stream s = newFileStream.AsStreamForWrite())
                                    {
                                        await fileData.CopyToAsync(s);
                                        await s.FlushAsync();
                                    }
                                }
                            }
　　　　　　}