Silverlight Knowledge Base

Conditional and Logical Operators

When handling boolean values, you want to be able to test for a value, but also to modify it. This is what conditional and logical operators are for.

The three main operators acting on boolean values are shown in Listing 9.10:

► &&—AND, returns true only if both operands are true.

► ||—OR, returns true if at least one of the operands is true.

► !—NOT, returns true if the single operand is false, and returns false if it is true.

LISTING 9.10 Conditional and Logical Operators bool valuel = true;

bool value2 = !value1; // stores false into value2

bool value3 = valuel && value2; // stores false into value3 bool value4 = valuel || value2; // stores true into value4