Hi guys,
I achieved this with following way:
private static MemoryStream CreateArchive(Stream ms)
{
using (var zipMemoryStream = new MemoryStream())
{
var zipArchive = new ZipArchive
{
DefaultCompressionLevel = CompressionLevel.Best,
};
ms.Position = 0;
zipArchive.AddItem("Excel.xlsx", ms, false, FileAttributes.Normal);
zipArchive.Save(zipMemoryStream, false);
return zipMemoryStream;
}
}
Not sure if it's right.
Thanks,
Alex