using System; using System.Security; public class Example { public static void Main() { char[] chars = { 't', 'e', 's', 't' }; // Instantiate the secure string. SecureString testString = new SecureString(); // Assign the character array to the secure string. foreach (char ch in chars) testString.AppendChar(ch); // Display secure string length. Console.WriteLine("The length of the string is {0} characters.", testString.Length); } }