PowerTCP Zip Compression for .NET

private void buttonUnzip_Click(object sender, EventArgs e)
{
    try
    {
        //Open a zip file to decompress.
        archive1.Open("c:\\MyArchive\\myZipFile.zip");

        //Decrypt the zip file using AES 256.
        archive1.DefaultEncryption = Dart.PowerTCP.Zip.Encryption.Aes256Bit;
        archive1.Password = "321!thisIsMyPassword";

        //Decompress the file, preserving paths.
        archive1.PreservePath = true;
        archive1.Unzip("c:\\MyFiles");
    }
    catch (Exception ex)
    {
        //Display message if operation encounters an error.
        textWarnings.AppendText("Error: " + ex.Message + Environment.NewLine);
    }
}

private void archive1_Progress(object sender, Dart.PowerTCP.Zip.ProgressEventArgs e)
{
    //Show zip progress for each item in the folder.
    progressItem.Maximum = 100;
    double itemPercent = ((double)e.ProcessedItemBytes / (double)e.Item.Size) * 100;
    progressItem.Value = Convert.ToInt16(itemPercent);

    //Show zip progress for the entire folder.
    progressTotal.Maximum = 100;
    double totalPercent = ((double)e.ProcessedTotalBytes / (double)e.TotalBytes) * 100;
    progressTotal.Value = Convert.ToInt16(totalPercent);
}

private void archive1_Exception(object sender, Dart.PowerTCP.Zip.ExceptionEventArgs e)
{
    //Display any warnings that occur during the operation.
    textWarnings.AppendText("Warning: " + archive1[e.Index].Name + " - " +
    e.Exception.Message + Environment.NewLine);
}