Nanook.QueenBee.EditorForm.mnuReplaceFile_Click C# (CSharp) Method

        private void mnuReplaceFile_Click(object sender, EventArgs e)
        {
            try
            {

                string qbname = lstPakContents.SelectedItems[0].SubItems[1].Text;
                string fname = qbname.Replace('\\', '#').Replace('/', '#');

                if (AppState.LastQbReplacePath.Length != 0)
                {
                    if (Directory.Exists(AppState.LastQbReplacePath))
                    {
                        openQb.InitialDirectory = AppState.LastQbReplacePath;
                        fname = Path.Combine(AppState.LastQbReplacePath, fname);
                    }
                }

                fname = getBestFullFilename(fname);

                openQb.Filter = string.Format("{0} (*.qb.{1})|*.qb.{1}|All files (*.*)|*.*", _pakFormat.PakFormatType.ToString(), _pakFormat.FileExtension);

                openQb.FileName = fname;
                if (openQb.ShowDialog(this) != DialogResult.Cancel)
                {
                    this.Cursor = Cursors.WaitCursor;
                    AppState.LastQbReplacePath = (new FileInfo(openQb.FileName)).DirectoryName;
                    _pakFile.ReplaceFile(qbname, openQb.FileName);

                    refreshPakList();
                }
            }
            catch (Exception ex)
            {
                showException("Replace Error", ex);
            }
            finally
            {
                this.Cursor = Cursors.Default;
            }
        }