Automatically localizing applications with Google Translate

using System;
using System.Windows.Forms;
using System.Reflection;
using org.vonburg.UtilityApps.App_Localizer.Language_Codes;

namespace org.vonburg.UtilityApps.App_Localizer
{
    public partial class frmMain : Form
    {
        #region Private Variables

        /// <summary>
        /// Holds a refference to the languages object
        /// </summary>
        private languages _languages = new languages();

        #endregion

        public frmMain()
        {
            InitializeComponent();
        }

        #region Form Events

        /// <summary>
        /// Occurs when the form is first loaded
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void frmMain_Load(object sender, EventArgs e)
        {
            //set version info                        
            Version version = Assembly.GetExecutingAssembly().GetName().Version;
            this.lblVersion.Text = "Version:" + version.Major + "." + version.Minor + "." + version.Build + "." + version.Revision;

            //load the languages in the drop lists            
            string[] sLangs = this._languages.getAllLanguages();
            this.cbSourceLanguage.Items.AddRange(sLangs);
            this.cbSourceLanguage.Text = "English";
            this.cbOutputLanguage.Items.AddRange(sLangs);
            this.cbOutputLanguage.Text = "Spanish";
        }
        
        /// <summary>
        /// Occurs when the btnBrowseSource is clicked
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnBrowseSource_Click(object sender, EventArgs e)
        {
            if (this.openFileDialog.ShowDialog(this) == DialogResult.OK)
            {
                this.txtSourceFile.Text = this.openFileDialog.FileName;
            }
        }

        /// <summary>
        /// Occurs when the btnBrowseOutput is clicked
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnBrowseOutput_Click(object sender, EventArgs e)
        {
            if (this.saveFileDialog.ShowDialog(this) == DialogResult.OK)
            {
                this.txtOutputFile.Text = this.saveFileDialog.FileName;
            }
        }

        /// <summary>
        /// Called when the btnTranslate is clicked.
        /// Performs the translation of the file
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnTranslate_Click(object sender, EventArgs e)
        {
            //make the tranlate button readonly
            this.btnTranslate.Enabled = false;
            this.lblMsg.Text = "";
            this.Cursor = Cursors.WaitCursor;

            //check for required variables
            if (this.txtSourceFile.Text == "")
            {
                throw new Exception("You must specifiy a source file");
            }
            if (this.txtOutputFile.Text == "")
            {
                throw new Exception("You must specifiy an output file");
            }

            //translate the file
            Localizer localizer = new Localizer();
            string sourceLangCode = this._languages.getLanguageCode(this.cbSourceLanguage.Text);
            string destLangCode = this._languages.getLanguageCode(this.cbOutputLanguage.Text);
            localizer.translateFile(this.txtSourceFile.Text, this.txtOutputFile.Text, sourceLangCode, destLangCode, this.cbOnlyTextProps.Checked);
            
            //make the tranlate button enabled
            this.btnTranslate.Enabled = true;
            this.lblMsg.Text = "Completed translation";
            this.Cursor = Cursors.Default;
        }

        #endregion
    }
}