Question: Would it be possible to make InternalAddEntry public?

[romerod]

I would like to merge two zip files without decompressing/recompressing and decrypting/encrypting.

The following spike code does what I want:

var addEntryMethod = typeof(ZipFile).GetMethod("InternalAddEntry", BindingFlags.NonPublic | BindingFlags.Instance);

using (var zip1 = ZipFile.Read(stream1))
using (var zip2 = ZipFile.Read(stream2))
{
foreach (var entry in zip2.ToArray())
{
entry.FileName = $@"zip2/{entry.FileName}";
addEntryMethod.Invoke(zip1, new object[] { entry.FileName, entry });
//zip1.InternalAddEntry(entry.FileName, entry);
}

zip1.Save(@"C:\temp\merged.zip");

}