C# code for converting a string to and from Base 64

using System.Text;
public static class Base64Converter
{
     static public string EncodeTo64(string toEncode)
     {
         byte[] toEncodeAsBytes= ASCIIEncoding.ASCII.GetBytes(toEncode);
         return Convert.ToBase64String(toEncodeAsBytes);
     }

     static public string DecodeFrom64(string encodedData)

     {
         byte[] encodedDataAsBytes = Convert.FromBase64String(encodedData);
         return ASCIIEncoding.ASCII.GetString(encodedDataAsBytes);
     }
 }