Reverse String

/// <summary>
/// Erweiterung für die String-Klasse
/// </summary>
public static class StringExtensions
{
	/// <summary>
	/// Dreht den String um
	/// </summary>
	/// <param name="text"></param>
	/// <returns></returns>
	public static string Reverse(this string text)
	{
		StringBuilder sb = new StringBuilder();

		for (int i = text.Length - 1; i >= 0; i--)
			sb.Append(text.Substring(i, 1));

		return sb.ToString();
	}
}

string s = "Test";
Console.WriteLine(s.Reverse());
Console.ReadKey();