LZMA SDK Copyright (C) 1999-2007 Igor Pavlov LZMA is default and general compression method of 7z format in 7-Zip compression program (www.7-zip.org). LZMA provides high compression ratio and very fast decompression. ----------------------- It doesn't mention .zip, or the other compression schemes 7 Zip handles, as coming out of LZMA, does it? Sorry I bothered you. John

Yes, that's where I started.

Hi, I'm trying to create .zip files within a C# application with the LZMA SDK. The code worked immediately, but I can't figure out how to produce a .zip output, and I must have plain .zip. The 7z GUI produces .zip files with no problem, so it must be possible with the SDK. I thought sure that changing the "algorithm" property was the answer, but running tests with that property ranging from 0 to 8 produced no apparent change in the output. Windows Explorer (7) rejects all such efforts, while the 7z GUI opens the outputs, no matter what. I've spent too much time perusing the C++ source code for the GUI. It's obvious that the author has a command of C++ that's an order of magnitude greater than mine. In short, what property need I set to what to yield a .zip output? Thank you. John

Hi, I have a datagridview form with two columns that display a text value from a second table in the dataset and set an integer field in the target record based on the text field selected in a combobox. Those two fields display blanks, always. One can display the appropriate text values with the drop down, but nothing gets set. What's making me crazy is that that form, if pulled out of the project, made a standalone in its own project, hitting the same database, of identical dataset and everything else I can find, works fine. Any ideas? Thank you. John Malcosky