C#

namespace StealthLog<br />
{<br />
    static class Program<br />
    {<br />
        /// <summary><br />
        /// The main entry point for the application.<br />
        /// </summary><br />
        [STAThread]<br />
        static void Main()<br />
        {<br />
            string str = "test of write";<br />
<br />
            StreamWriter sw = StealthLog.LogMgr.NewLogFile();<br />
            StealthLog.LogMgr.LogToFile(sw, str);<br />
<br />
            Application.EnableVisualStyles();<br />
            Application.SetCompatibleTextRenderingDefault(false);<br />
            Application.Run(new Form1());<br />
        }<br />
<br />
<br />
    }<br />
}

namespace StealthLog<br />
{<br />
    class LogMgr<br />
    {<br />
        internal static void LogToFile(StreamWriter sw, string text)<br />
        {<br />
            sw.WriteLine(text);<br />
        }<br />
<br />
        internal static StreamWriter NewLogFile()<br />
        {<br />
            string headerString = DateTime.Now.ToString() + "---------------\n";<br />
            string fullFilePath = Settings.Default.LogDirectory.ToString() +<br />
                                  Settings.Default.LogFile.ToString();<br />
<br />
            if (File.Exists(fullFilePath))<br />
            {<br />
                using (StreamWriter sw = File.CreateText(fullFilePath))<br />
                {<br />
                    sw.WriteLine("test1");<br />
                    return sw;<br />
                }<br />
            } else {<br />
                using (StreamWriter sw = File.CreateText(fullFilePath))<br />
                {<br />
                    sw.WriteLine("test2");<br />
                    return sw;<br />
                }<br />
            }<br />
        }<br />
    }<br />
}

<br />
private void TestUC2_Load(object sender, EventArgs e)<br />
{<br />
    DelegateButtons db = (this.Page as Default).DelegateButtons1;<br />
    if (db != null && !db.IsButtonRegistered("foo"))<br />
        db.RegisterButton("foo", "Foo", "dbutton", new ButtonAction(this.TestAction));<br />
}<br />
<br />
private void TestAction()<br />
{<br />
    DelegateButtons db = (this.Page as Default).DelegateButtons1;<br />
    if (db != null && !db.IsButtonRegistered("bar"))<br />
        db.RegisterButton("bar", "Bar", "dbutton", new ButtonAction(this.TestAction));<br />
}<br />

                                                                   Hashtable
 1. Page loads for the first time                                  {}
 2. TestUC registers a 'foo' button                                {foo}
 3. Page is drawn                                                  {foo}
 4. ViewState is saved                                             {foo}
 5. User clicks 'foo' button                                       {foo}
 6. Page loads                                                     {}
 7. ViewState is loaded                                            {foo}
 8. Button click event is called                                   {foo}
 9. TestAction is called                                           {foo}
10. TestAction checks if 'bar' exists                              {foo,bar}
11. TestAction says 'bar' exists so doesn't recreate it            {foo,bar}
12. TestAction finishes, step returns to click event               {foo}