string GetProjectUpgradeVersion(string projectUpgradeToolPath) //5.1 td { string assemblyFullName = MyFileWorker.AssemblyLoadFileFullName(projectUpgradeToolPath); string versionAssemblypattern = @"version=(?<Version>\d+\.\d.\d+)"; Regex regexVersion = new Regex(versionAssemblypattern, RegexOptions.CultureInvariant | RegexOptions.IgnoreCase); Match versionMatch = regexVersion.Match(assemblyFullName); string versValue = versionMatch.Groups["Version"].Value; return(versValue); }