我正在try 从一系列字节数组创建.NET4.5(System.IO.Compression)中的Zip文件.例如，从我正在使用的API中，我最终得到了List<Attachment>，并且每个Attachment都有一个称为Body的属性，它是byte[].如何遍历该列表并创建包含每个附件zip文件？
现在我的印象是，我必须将每个附件写入磁盘，并从中创建zip文件.
//This is great if I had the files on disk
ZipFile.CreateFromDirectory(startPath, zipPath);
//How can I create it from a series of byte arrays?
我又玩了一会儿，又读了一会儿，才明白这一点.以下是如何创建包含多个文件的zip文件(存档)，而无需将任何临时数据写入磁盘:
using (var compressedFileStream = new MemoryStream())
{
//Create an archive and store the stream in memory.
using (var zipArchive = new ZipArchive(compressedFileStream, ZipArchiveMode.Create, false)) {
foreach (var caseAttachmentModel in caseAttachmentModels) {
//Create a zip entry for each attachment
var zipEntry = zipArchive.CreateEntry(caseAttachmentModel.Name);
//Get the stream of the attachment
using (var originalFileStream = new MemoryStream(caseAttachmentModel.Body))
using (var zipEntryStream = zipEntry.Open()) {
//Copy the attachment stream to the zip entry stream
originalFileStream.CopyTo(zipEntryStream);
}
}
}
return new FileContentResult(compressedFileStream.ToArray(), "application/zip") { FileDownloadName = "Filename.zip" };
}