I have an application where the path needs to be preserved.  Often the path will contain an empty subfolder.  When using Winzip, the empty subfolder won't be displayed in the GUI but will be preserved and created once the file is unzipped.  In Xceed using processsubfolders, I can preserve subfolders containg at least one file but empty subfolders are lost.  Is there a way in Xceed to preserve the empty subfolders?

You need to set the ExcludedFileAttributes property to xfaNone. Here is a code example:

XceedZip zip = new XceedZipLib.XceedZipClass();
bool licenseResult = zip.License( "License key" );

Console.WriteLine( licenseResult.ToString() );
zip.PreservePaths = true;
zip.ZipFilename = @"D:\Forum11694\archive.zip";
zip.FilesToProcess = @"D:\TestFolder\*";
zip.ProcessSubfolders = true;
zip.ExcludedFileAttributes = xcdFileAttributes.xfaNone;

xcdError message = zip.Zip();
Console.WriteLine( message.ToString() + " (" + ( ( int )message ).ToString() + "):" );
Console.WriteLine( zip.GetErrorDescription( xcdValueType.xvtError, ( int )message ) );

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Charles Bérubé-Rémillard
Technical Support
Xceed Software Inc.

For future reference, the xcdFileAttributes.xfaNone alone didn't work correctly.  The resolution was to set it to xcdFileAttributes.xfaVolume (8) because the default value is xfaVolume + xfaFolder.  Thanks to CharlesB with Xceed support.