This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Assembly: mscorlib (in mscorlib.dll)
The ToBase64CharArray and ToBase64String methods convert the value of an array of 8-bit unsigned integers to an equivalent string representation that consists of base 64 digits. The string representation can contain one or more line breaks, where a line break is defined as a carriage return character (U+000D) followed by a line feed character (U+000A).
The and values are mutually exclusive. Therefore, although the enumeration is marked with the FlagsAttribute attribute, it makes no sense to perform a bitwise combination of these two values.