C#

FileStream fs = File.Create(filename);<br />
byte[] salt = new byte[16];<br />
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();<br />
rng.GetBytes(salt);<br />
fs.Write(salt, 0, salt.Length)<br />
<br />
// PasswordDeriveBytes and do your encrypting..

FileStream fs = File.OpenRead(filename);<br />
byte[] salt = new byte[16];<br />
fs.Read(salt, 0, salt.Length)<br />
<br />
// PasswordDeriveBytes and do your decrypting..

MyMethod(ref (Control)myButton);

void Test(ref Control c)
{
    // Change the object reference
    c = new Textbox();
}
...
Button b = myButton;
Test(ref b);

Control temp = (Control)myButton;
Test(ref temp);
myButton = (Button)temp;

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"When the only tool you have is a hammer, a sore thumb you will have."