C#

string testText = "<?xml version=\"1.0\" encoding=\"utf-16\" ?> <GPO xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:<big>Alias1</big>=\"http://www.microsoft.com/GroupPolicy/Settings\"> <Identifier> <Identifier xmlns:<big>Alias2</big>=\"http://www.microsoft.com/GroupPolicy/Types\">{89AEAFFE-E1F8-4786-8AF7-6BE2D991625E}</Identifier></Identifier></GPO>";<br />
<br />
System.Xml.XmlDocument xml = new System.Xml.XmlDocument();<br />
xml.LoadXml(testText);          <br />
System.Xml.XmlNode xmln = xml.SelectSingleNode("/GPO/Identifier/Identifier");<br />
string Identifier = xmln.InnerText.ToString();

public XmlNode SelectSingleNode(
	string xpath,
	XmlNamespaceManager nsmgr
)

DirectoryEntry iis = new DirectoryEntry("IIS://" + Environment.MachineName + "/w3svc");

foreach (DirectoryEntry site in iis.Children)
{
	if (site.SchemaClassName == "IIsWebServer") //Web Sites have the IIsWebServer schema{
	{
		String siteName = site.Name;
		foreach (String propertyName in site.Properties.PropertyNames)
		{
			PropertyValueCollection values = site.Properties[propertyName];
			foreach (object val in values)
			{
				Console.WriteLine(propertyName + ": " + val);
			}
		}
	}
}

using System.IO;
using System.Text.RegularExpressions;

        private void SearchLink_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            if( File.Exists("C:\\Users\\Jase\\Desktop\\Test.txt"))
            {
            // File to search.
            string FileName = "C:\\Users\\Jase\\Desktop\\Test.txt";

            // Reads file to end.
            StreamReader SearchText = new StreamReader(FileName);
            string ReadAll = SearchText.ReadToEnd();

            // SearchTextBox.Text contains string to search for.
            SearchText.Close();
            string regMatch = SearchTextBox.Text;

            // If the string has been found, do something.
            if (Regex.IsMatch(ReadAll, regMatch))
            {
                MessageBox.Show("Found\n" + "" + regMatch);
            }
            else
            {
                MessageBox.Show("Not found\n");
            }
            }
            else
            {
                MessageBox.Show("Non-Existant File.");
            }
        }

String path = "path to your file";
System.IO.StreamReader reader = new System.IO.StreamReader(path);
String data = reader.ReadToEnd();
byte[] buffer = Encoding.ASCII.GetBytes(data);
System.Collections.BitArray bits = new System.Collections.BitArray(buffer);

//and then do whatever manipulation you have to do