Expressions

C# includes unary operators, binary operators, and one ternary operator. The following table summarizes the operators, listing them in order of precedence from highest to lowest: Section Category Operators 14.5 Primary x.y f(x) a[x] x++ x--new typeof checked unchecked 0 Unary + -! ~ ++x --x (T)x 14.7 Multiplicative * / % 14.7 Additive + -0 Shift << >> 14.9 Relational and type-testing < > <= >= is as 14.9 Equality == != 14.10 Logical AND & 14.10 Logical XOR ^ 14.10 Logical OR | 14.11 Conditional AND && 14.11 Conditional OR || 14.12 Conditional ?: 14.13 Assignment = *= /= %= += -= <<= >>= &= ^= |= When an expression contains multiple operators, the precedence of the operators controls the order in which the individual operators are evaluated. For example, the expression x + y * z is evaluated as x + (y * z) because the * operator has higher precedence than the + operator.
When an operand occurs between two operators with the same precedence, the associativity of the operators controls the order in which the operations are performed: Except for the assignment operators, all binary operators are left-associative, meaning that operations are performed from left to right. For example, x + y + z is evaluated as (x + y) + z. The assignment operators and the conditional operator (?:) are right-associative, meaning that operations are performed from right to left. For example, x = y = z is evaluated as x = (y = z).
Precedence and associativity can be controlled using parentheses. For example, x + y * z first multiplies y by z and then adds the result to x, but (x + y) * z first adds x and y and then multiplies the result by z.