ICSharpCode.SharpZipLib.Zip.ZipFile.FindExistingUpdate C# (CSharp) Method

        private int FindExistingUpdate(string fileName) {
            int result=-1;

            string convertedName=GetTransformedFileName(fileName);

            if (updateIndex_.ContainsKey(convertedName)) {
                result=(int)updateIndex_[convertedName];
            }

            /*
                        // This is slow like the coming of the next ice age but takes less storage and may be useful
                        // for CF?
                        for ( int index = 0; index < updates_.Count; ++index ) {
                            if ( string.Compare(convertedName, (( ZipUpdate )updates_[index]).Entry.Name,
                                true, CultureInfo.InvariantCulture) == 0 ) {
                                result = index;
                                break;
                            }
                        }
             */

            return result;
        }