C#

int oldIndex = richTextBoxText.SelectionStart;

int WordID = 5;
richTextBoxText.Select(0, WordID);
richTextBoxText.SelectionColor = System.Drawing.Color.Blue;

richTextBoxText.Select(oldIndex, 0);

richTextBoxText.Select(0,0);

richTextBox.Select(5,15);
richTextBox.SelectionColor = Color.Blue;

System.Diagnostics.Process process = new System.Diagnostics.Process();
System.Diagnostics.ProcessStartInfo info = new System.Diagnostics.ProcessStartInfo();
info.FileName = "CommandLineApplication.exe";
info.CreateNoWindow = true;	
info.RedirectStandardInput = true;
info.RedirectStandardOutput = true;
process.StartInfo = info;
process.Start();

[DllImport("User32.dll")]<br />
public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);<br />
<br />
public void SendTextBoxKeyPress()<br />
{<br />
// pretend the enter key was pressed in the textbox<br />
SendMessage(textbox.Handle, 0x0102 /*WM_CHAR*/, (int) Keys.Enter, 0);<br />
}

notifyIcon1.MouseDown += new MouseEventHandler(notifyIcon1_MouseDown);
notifyIcon1.Click += new EventHandler(notifyIcon1_Click);
 
// ...
 
Point p;
 
private void notifyIcon1_MouseDown(object sender, MouseEventArgs e)
{
  p = new Point(e.X, e.Y);
}
 
private void notifyIcon1_Click(object sender, EventArgs e)
{
  MessageBox.Show(string.Format("The user clicked at {0} within the icon.", p));
}

But what if the user does not click on the notifyicon? I need to know the location even if the icon is not clicked. Can I emulate/simulate a click?

Regex re = new Regex(@"\bWord1\b.*\bWord2\b.*\bWord3\b"); // notice the "@"
Match m = re.Match("This is a sentence with Word1, then Word2, and followed by Word3.");