C#

<br />
using System;<br />
using System.Runtime.InteropServices;<br />
<br />
namespace System<br />
{<br />
	public class WorkingArea<br />
	{<br />
		[DllImport("user32.dll", CharSet=CharSet.Auto, SetLastError=true)]<br />
        [return:MarshalAs(UnmanagedType.Bool)]<br />
        public static extern bool SendMessageTimeout(IntPtr hWnd,int Msg,string lParam,int uTimeout,int lpdwResult);<br />
<br />
		public struct RECT<br />
		{<br />
			public int Left;<br />
			public int Top;<br />
			public int Right;<br />
			public int Bottom;<br />
		}<br />
		[DllImport("User32.dll", EntryPoint = "SystemParametersInfoA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]<br />
		private static extern short SystemParametersInfo(short uAction, short uparam, ref RECT lpvParam, short fuWinIni);<br />
		[DllImport("user32", EntryPoint = "PostMessageA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]<br />
		private static extern int PostMessage(int hwnd, int wMsg, int wParam, ref int lParam);<br />
<br />
	<br />
        public const int HWND_BROADCAST = 0xffff;<br />
        public const int WM_SETTINGCHANGE = 0x001A;<br />
        public const int SMTO_NORMAL = 0x0000;<br />
        public const int SMTO_BLOCK = 0x0001;<br />
        public const int SMTO_ABORTIFHUNG = 0x0002;<br />
        public const int SMTO_NOTIMEOUTIFNOTHUNG = 0x0008;<br />
	public const int SPIF_SENDCHANGE = 0x02;<br />
	public const short SPI_SETWORKAREA = 47;<br />
	<br />
		public void SetWorkArea(RECT rect)<br />
		{<br />
			SystemParametersInfo(SPI_SETWORKAREA, 0,ref rect, SPIF_SENDCHANGE);<br />
			//SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETWORKAREA, "", SMTO_ABORTIFHUNG, 100000, null);<br />
		}<br />
	}<br />
}

WorkingArea WorkSpace = new WorkingArea();<br />
RECT Area = new WorkingArea.RECT();<br />
Area.Left=25;<br />
Area.Top=25;<br />
Area.Bottom=25;<br />
Area.Right=25;<br />
WorkSpace.SetWorkArea(Area);

<br />
     ctlTextEdit.DataBindings.Add(new Binding("EditValue", _mySourceDataRow, "Field1"));<br />
<br />
....<br />
    <br />
    void someButton_onClick(...)<br />
    {<br />
       _mySourceDataRow.Field1 = "New text";<br />
  /*<br />
  What i should write here for ctlTextEdit control reflect changes (i.e "New text")<br />
  But without direct invokation of his methods <br />
  (for examp:this.codeTextEdit.DataBindings[0].ReadValue();<br />
  */<br />
    }      <br />
     <br />

public static void FromFile(string path, KorepetytorMenu menu)
{
	XmlDocument xmlDoc = new XmlDocument();
	xmlDoc.Load(path);
	foreach (XmlNode rootNode in xmlDoc.ChildNodes) {
		XmlElement rootEl = rootNode as XmlElement;
		if (rootEl != null && rootEl.Name == "KorepetytorMenu") {
			foreach (XmlNode node in rootEl.ChildNodes) {
				XmlElement el = node as XmlElement;
				if (el != null && el.Name == "RootNode") {
					menu.rootNode = KorepetytorMenuNode.FromXmlElement(el);
					ReadNodeChildsRecursive(menu.rootNode, el);
				}
			}
		}
	}
}

<?xml version="1.0" encoding="utf-8" ?>
<KorepetytorMenu>
  <RootNode Header="" Image="">
    <Node Header="Fizyka">
      <Node Header="Równania Rózniczkowe" Image="Gwiazdka.png" />
      <Node Header="Kinematyka 1" File="Matma\Równania Rózniczkowe.xml" />
      (...)
    </Node>
  </RootNode>
</KorepetytorMenu>