public static byte[] FromBase64StringNoPadding(this String base64String)
{
ArgumentUtility.CheckStringForNullOrEmpty(base64String, "base64String");
string s = base64String;
s = s.Replace('-', '+'); // 62nd char of encoding
s = s.Replace('_', '/'); // 63rd char of encoding
switch (s.Length % 4) // Pad with trailing '='s
{
case 0: break; // No pad chars in this case
case 2: s += "=="; break; // Two pad chars
case 3: s += "="; break; // One pad char
default:
throw new ArgumentException(CommonResources.IllegalBase64String(), "base64String");
}
return(Convert.FromBase64String(s)); // Standard base64 decoder
}