# Xor Operator

**Visual Studio .NET 2003**

Performs a logical exclusion operation on two **Boolean** expressions, or a bitwise exclusion on two numeric expressions..

result = expression1 Xor expression2

#### Parts

*result*- Required. Any
**Boolean**or numeric variable. The result for**Boolean**comparison is the logical exclusion of two expressions. For bitwise operations the result is a numeric value resulting from the bitwise exclusion of two numeric expressions *expression1*- Required. Any
**Boolean**or numeric expression. *expression2*- Required. Any
**Boolean**or numeric expression of the same type as*expression1*.

#### Remarks

For **Boolean** comparisons, if one and only one of the expressions evaluates to **True**, *result* is **True**. Otherwise, *result* is **False**. If either expression is stated as Nothing, that expression is evaluated as **False**.

If expression1 is | And expression2 is | Then result is |
---|---|---|

True | True | False |

True | False | True |

False | True | True |

False | False | False |

For numeric expressions, the **Xor** operator performs as a bitwise operator. A bitwise comparison of two expressions using exclusive-or logic to form the result, as shown in the following table:

If bit in expression1 is | And bit in expression2 is | Then result is |
---|---|---|

0 | 0 | 0 |

0 | 1 | 1 |

1 | 0 | 1 |

1 | 1 | 0 |

NoteSince the logical/bitwise operators have a lower precedence than other arithmetic and relational operators, any bitwise operations should be enclosed in parentheses to ensure accurate execution.

If the operands consist of one **Boolean** expression and one numeric expression, the result **Boolean** expression will be converted to a numeric value (-1 for True, and 0 for False) and the bitwise operation will result.

#### Example

This example uses the **Xor** operator to perform logical exclusion on two expressions. The result is a **Boolean** value representing whether *only* one of the expressions is true.

Dim A As Integer = 10 Dim B As Integer = 8 Dim C As Integer = 6 Dim myCheck As Boolean myCheck = A > B Xor B > C ' Returns False. myCheck = B > A Xor B > C ' Returns True. myCheck = B > A Xor C > B ' Returns False.

This example uses the **Xor** operator to perform logical exclusion of the individual bits of two numeric expressions. The bit in the result pattern is set if only one of the corresponding bits in the operands are set.

Dim A As Integer = 10 Dim B As Integer = 8 Dim C As Integer = 6 Dim myCheck As Integer myCheck = (A Xor B) ' Returns 2. myCheck = (A Xor C) ' Returns 12. myCheck = (B Xor C) ' Returns 14.

#### See Also

Logical/Bitwise Operators | Operator Precedence in Visual Basic | Operators Listed by Functionality | Logical Operators