Boolean values, named after George Boole, are used to denote logical truth values. Named
System.Boolean in the BCL, the type surfaces with the
bool alias in C#. Only two Boolean values exist, both of which have an associated Boolean literal. Unsurprisingly, those are true and false.
Note: Memory representation and use
Although only 1 bit would be required to express true or false, Boolean values are represented by the CLR as 1 byte. You can see this from the Immediate window by evaluating the
sizeof(bool) expression. This is really just an implementation detail, reflecting the smallest addressable unit of memory.
But from a typing perspective, there are really only two semantic values for the Boolean type: An all-zero pattern ...