zip file 压缩文件

[HttpPost("upload")]
public async Task<ActionResult<string>> Upload([FromForm] UploadFileData data)
{
    using (var fileStream = data.file.OpenReadStream())
    {
        using (var zip = ZipFile.Open($@"C:\keatkeat\my-projects\aspnetcore-projects\asp.net core 2.2\zip-file\Project\dada.zip", ZipArchiveMode.Create))
        {
            var entry = zip.CreateEntry("abc.pdf");
            using (var entryStream = entry.Open())
            {
                await fileStream.CopyToAsync(entryStream);
            }
        }
    }
    return Ok();
}

string root = AppDomain.CurrentDomain.BaseDirectory;
string[] inputFiles = new string[] { root + "angular1.min.js", root + "Capture.PNG" };
string outputFile = root + "myZip4.zip";

FileInfo file = new FileInfo(outputFile); 
if (file.Exists) throw new Exception("error");
bool notExist = inputFiles.Any(f =>
{
    FileInfo fileInfo = new FileInfo(f);
    return !fileInfo.Exists;
});
if (notExist) throw new Exception("error");

using (var zip = ZipFile.Open(outputFile, ZipArchiveMode.Create))
{
    foreach (var inputFile in inputFiles)
    {
        string fileName = Path.GetFileName(inputFile);
        zip.CreateEntryFromFile(inputFile, fileName);
    }
}

//ZipFile.CreateFromDirectory(root + "myfolder", root + "abc.zip");

[ODataRoute("uploadFile")]
public async Task<IHttpActionResult> uploadFile()
{           
    if (!Request.Content.IsMimeMultipartContent()) throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
    string root = AppDomain.CurrentDomain.BaseDirectory + "UploadedFiles";
    var provider = new Helper.MyMultipartFormDataStreamProvider(root);
    await Request.Content.ReadAsMultipartAsync(provider);
    string localFilePath = provider.FileData[0].LocalFileName;
    //do zip..., delete original file, if multiple then loop 
    string fileName = Path.GetFileNameWithoutExtension(localFilePath) + ".zip"; 
    return Ok(fileName);            
}

string root = AppDomain.CurrentDomain.BaseDirectory;
var memoryStream = new MemoryStream();
using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
{
    var demoFile = archive.CreateEntryFromFile(root + "angular.min.js", "angular.min.js");
}
memoryStream.Seek(0, SeekOrigin.Begin);
string filepath = AppDomain.CurrentDomain.BaseDirectory + "angular.min.zip";
string contentType = MimeMapping.GetMimeMapping(filepath);
return File(memoryStream, contentType, "angular.min.zip");