usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingMicrosoft.Win32;usingSystem.IO;usingICSharpCode.SharpZipLib.Checksums;usingICSharpCode.SharpZipLib.Zip;usingSystem.Diagnostics;namespaceFileOperations{publicclassSharpZip{publicSharpZip(){}