Having some issues while using chilkat library for zipping/unzipping

I am using chilkat library for zipping some files and moving them to a another path. This works fine most of the time, but some times there is a tmp file made in path where my exe resides. Now I checked suddenly after 3 months,this files has gone to take 2 GB of hard disk. Following is my code:

 public static bool MoveShopTRRFiles() {
            //string fullfilepath;
            Zip zip = new Zip();
            bool unlocked = zip.UnlockComponent("abc");
            if (!unlocked) {
                //MessageBox.Show(zip.LastErrorText);
                //return;
                return false;
            }
            if (Directory.Exists(_TRRPath)) {
            foreach (string filename in Directory.GetFiles(_TRRPath, "*.trr")) {
                if (!File.Exists(_ShopTRRPath + "\\" + GetShopName(filename) + ".zip")) {
                    zip.NewZ开发者_Python百科ip(_ShopTRRPath + "\\" + GetShopName(filename) + ".zip");
                } else {
                    zip.OpenZip(_ShopTRRPath + "\\" + GetShopName(filename) + ".zip");
                }
                try {
                    if(zip.GetEntryByName (filename.Substring(filename.LastIndexOf('\\') + 4))==null ){
                        zip.AppendOneFileOrDir(filename);
                    }

                    zip.WriteZipAndClose();                       
                    File.Delete(filename);
                } catch {

                }
            }
            return true;
        } else
            return false;
    }

FOr now,i am deleting the temp files if any from the application folder.So this solves the problem for now.