C#

using System;
using System.IO;
using System.Xml;
 
class Test
{
  const string xml = @"<?xml version=""1.0""?>
<root>
  <child>
    <text1>Hello</text1>
    <text2>World</text2>
  </child>
  <child>
    <text1>Howdy</text1>
    <text2>Earth</text2>
  </child>
</root>";
 
  static void Main()
  {
    using (StringReader sr = new StringReader(xml))
    {
      XmlTextReader reader = new XmlTextReader(sr);
      while (reader.Read())
      {
        if (reader.Name == "child")
        {
          Console.WriteLine(reader.ReadOuterXml());
          Console.WriteLine("----------");
        }
      }
    }
  }
}

using System;
using System.Drawing;
using System.Windows.Forms;
 
class Test : Form
{
  static void Main()
  {
    Application.Run(new Test());
  }
 
  Test()
  {
    RichTextBox rt = new RichTextBox();
    Controls.Add(rt);
    rt.Dock = DockStyle.Fill;
    rt.ShowSelectionMargin = true;
 
    Text = "Test";
  }
}