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    <p>Use this simple, brute force class to 'crack' your password. I've set the maximum size here to <strong>3</strong>, so I didn't have to wait too long. Increase this if you've got all day!</p> <pre><code>private class BrutePasswordGuesser { private const int MaxAscii = 126; private const int MaxSize = 3; private const int MinAscii = 33; private int _currentLength; public BrutePasswordGuesser() { //Init the length, and current guess array. _currentLength = 0; CurrentGuess = new char[MaxSize]; CurrentGuess[0] = (char) MinAscii; } public char[] CurrentGuess { get; private set; } public bool NextGuess() { if (_currentLength &gt;= MaxSize) { return false; } //Increment the previous digit (Uses recursion!) IncrementDigit(_currentLength); return true; } /// &lt;summary&gt; /// Increment the character at the index by one. If the character is at the maximum /// ASCII value, set it back to the minimum, and increment the previous character. /// Use recursion to do this, so that the proggy will step all the way back as needed. /// If the very bottom of the string is reached, add another character to the guess. /// &lt;/summary&gt; /// &lt;param name="digitIndex"&gt;&lt;/param&gt; private void IncrementDigit(int digitIndex) { //Don't fall out the bottom of the array. //If we're at the bottom of the array, add another character if (digitIndex &lt; 0) { AddCharacter(); } else { //If the current character is max ASCII, set to min ASCII, and increment the previous char. if (CurrentGuess[digitIndex] == (char) MaxAscii) { CurrentGuess[digitIndex] = (char) MinAscii; IncrementDigit(digitIndex - 1); } else { CurrentGuess[digitIndex]++; } } } private void AddCharacter() { _currentLength++; //If we've reached our maximum guess size, leave now and don't come back. if (_currentLength &gt;= MaxSize) { return; } //Initialis as min ASCII. CurrentGuess[_currentLength] = (char) (MinAscii); } } </code></pre> <p>In your example above, use the class like this:</p> <pre><code>private void button1_Click(object sender, EventArgs e) { var guesser = new BrutePasswordGuesser(); var guess = new String(guesser.CurrentGuess); while (textBox1.Text != guess) { textBox2.Text = guess; if (!guesser.NextGuess()) { label1.Text = "Maximum guess size reached."; break; } guess = new String(guesser.CurrentGuess); } if (textBox1.Text == textBox2.Text) { Label1.Text = "Password Correct"; } } </code></pre>
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