Template based code generation

using System;
using System.IO;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace TemplateCodeGenerator
{
	/// <summary>
	/// Summary description for Editor.
	/// </summary>
	public class Editor : System.Windows.Forms.Form
	{
        private System.Windows.Forms.MainMenu mainMenu;
        private System.Windows.Forms.MenuItem menuFile;
        private System.Windows.Forms.MenuItem menuFileSave;
        private System.Windows.Forms.RichTextBox richTextBox;
        private System.Windows.Forms.MenuItem menuFileExit;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Editor()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
            this.mainMenu = new System.Windows.Forms.MainMenu();
            this.menuFile = new System.Windows.Forms.MenuItem();
            this.menuFileSave = new System.Windows.Forms.MenuItem();
            this.menuFileExit = new System.Windows.Forms.MenuItem();
            this.richTextBox = new System.Windows.Forms.RichTextBox();
            this.SuspendLayout();
            // 
            // mainMenu
            // 
            this.mainMenu.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                                                                     this.menuFile});
            // 
            // menuFile
            // 
            this.menuFile.Index = 0;
            this.menuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                                                                     this.menuFileSave,
                                                                                     this.menuFileExit});
            this.menuFile.Text = "File";
            // 
            // menuFileSave
            // 
            this.menuFileSave.Index = 0;
            this.menuFileSave.Shortcut = System.Windows.Forms.Shortcut.CtrlS;
            this.menuFileSave.Text = "Save";
            this.menuFileSave.Click += new System.EventHandler(this.menuFileSave_Click);
            // 
            // menuFileExit
            // 
            this.menuFileExit.Index = 1;
            this.menuFileExit.Text = "E&xit";
            this.menuFileExit.Click += new System.EventHandler(this.menuFileExit_Click);
            // 
            // richTextBox
            // 
            this.richTextBox.Dock = System.Windows.Forms.DockStyle.Fill;
            this.richTextBox.Font = new System.Drawing.Font("Courier New", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
            this.richTextBox.Location = new System.Drawing.Point(0, 0);
            this.richTextBox.Name = "richTextBox";
            this.richTextBox.ShowSelectionMargin = true;
            this.richTextBox.Size = new System.Drawing.Size(768, 369);
            this.richTextBox.TabIndex = 0;
            this.richTextBox.Text = "richTextBox";
            this.richTextBox.WordWrap = false;
            this.richTextBox.TextChanged += new System.EventHandler(this.richTextBox_TextChanged);
            // 
            // Editor
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(768, 369);
            this.Controls.Add(this.richTextBox);
            this.Menu = this.mainMenu;
            this.Name = "Editor";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Template Code Generator";
            this.Closing += new System.ComponentModel.CancelEventHandler(this.Editor_Closing);
            this.Load += new System.EventHandler(this.Editor_Load);
            this.ResumeLayout(false);

        }
		#endregion

        
        private void Editor_Load(object sender, System.EventArgs e)
        {
            string configFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
            string appFolder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
            configFile = Path.Combine(appFolder, Path.GetFileName(configFile));
            if(!File.Exists(configFile))
                configFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;

            StreamReader reader = new StreamReader(configFile);
            using(reader) 
            {
                this.richTextBox.Text = reader.ReadToEnd();
            }

            this.loaded = true;
        }

        void SaveConfiguration(bool prompt)
        {   
            if(!this.textChanged)
                return;

            DialogResult result = DialogResult.Yes;

            if(prompt)
            {
                result = System.Windows.Forms.MessageBox.Show(this,
                    "Save configuration before exit?", this.Text, 
                    System.Windows.Forms.MessageBoxButtons.YesNo);
            }

            if(result == DialogResult.Yes)
            {
                string configFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
                string appFolder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
                configFile =  Path.Combine(appFolder, Path.GetFileName(configFile));
                StreamWriter writer = new StreamWriter(configFile);
                using(writer)
                {
                    writer.Write(this.richTextBox.Text);
                }
                
            }
            this.textChanged = false;
        }


        private void menuFileSave_Click(object sender, System.EventArgs e)
        {
            SaveConfiguration(false);
        }

        
        bool textChanged;
        bool loaded;
        private void richTextBox_TextChanged(object sender, System.EventArgs e)
        {
            if(loaded)
                textChanged = true;
        }

        private void menuFileExit_Click(object sender, System.EventArgs e)
        {
            SaveConfiguration(true);
            
            this.Close();
        }

        private void Editor_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            SaveConfiguration(true);
        }
	}
}