9′M

static public string EncodeTo64(string toEncode)

{

byte[] toEncodeAsBytes

= System.Text.ASCIIEncoding.ASCII.GetBytes(toEncode);

string returnValue

= System.Convert.ToBase64String(toEncodeAsBytes);

return returnValue;

}

static public string DecodeFrom64(string encodedData)

{

byte[] encodedDataAsBytes

= System.Convert.FromBase64String(encodedData);

string returnValue =

System.Text.ASCIIEncoding.ASCII.GetString(encodedDataAsBytes);

return returnValue;

}

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string myData = “Here is a string to encode.”;

string myDataEncoded = EncodeTo64(myData);

Console.WriteLine(myDataEncoded);

string myDataUnencoded = DecodeFrom64(myDataEncoded);

Console.WriteLine(myDataUnencoded);

Console.ReadLine();

C#