# BinaryExpression Class

Represents an expression that has a binary operator.

**Namespace:**System.Linq.Expressions

**Assembly:**System.Core (in System.Core.dll)

The BinaryExpression type exposes the following members.

Name | Description | |
---|---|---|

CanReduce | Gets a value that indicates whether the expression tree node can be reduced. (Overrides Expression.CanReduce.) | |

Conversion | Gets the type conversion function that is used by a coalescing or compound assignment operation. | |

IsLifted | Gets a value that indicates whether the expression tree node represents a lifted call to an operator. | |

IsLiftedToNull | Gets a value that indicates whether the expression tree node represents a lifted call to an operator whose return type is lifted to a nullable type. | |

Left | Gets the left operand of the binary operation. | |

Method | Gets the implementing method for the binary operation. | |

NodeType | Gets the node type of this Expression. (Inherited from Expression.) | |

Right | Gets the right operand of the binary operation. | |

Type | Gets the static type of the expression that this Expression represents. (Inherited from Expression.) |

Name | Description | |
---|---|---|

Accept | Dispatches to the specific visit method for this node type. For example, MethodCallExpression calls the VisitMethodCall. (Overrides Expression.Accept(ExpressionVisitor).) | |

Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) | |

Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) | |

GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) | |

GetType | Gets the Type of the current instance. (Inherited from Object.) | |

MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) | |

Reduce | Reduces the binary expression node to a simpler expression. (Overrides Expression.Reduce().) | |

ReduceAndCheck | Reduces this node to a simpler expression. If CanReduce returns true, this should return a valid expression. This method can return another node which itself must be reduced. (Inherited from Expression.) | |

ReduceExtensions | Reduces the expression to a known node type (that is not an Extension node) or just returns the expression if it is already a known type. (Inherited from Expression.) | |

ToString | Returns a textual representation of the Expression. (Inherited from Expression.) | |

Update | Creates a new expression that is like this one, but using the supplied children. If all of the children are the same, it will return this expression. | |

VisitChildren | Reduces the node and then calls the visitor delegate on the reduced expression. The method throws an exception if the node is not reducible. (Inherited from Expression.) |

The following tables summarize the factory methods that can be used to create a BinaryExpression that has a specific node type, represented by the NodeType property. Each table contains information for a specific class of operations such as arithmetic or bitwise.

### Binary Arithmetic Operations

### Bitwise Operations

Node Type | Factory Method |
---|---|

### Shift Operations

Node Type | Factory Method |
---|---|

### Conditional Boolean Operations

### Comparison Operations

### Coalescing Operations

### Array Indexing Operations

Node Type | Factory Method |
---|---|

In addition, the MakeBinary methods can also be used to create a BinaryExpression. These factory methods can be used to create a BinaryExpression of any node type that represents a binary operation. The parameter of these methods that is of type NodeType specifies the desired node type.

The following example creates a BinaryExpression object that represents the subtraction of one number from another.

// Create a BinaryExpression that represents subtracting 14 from 53. System.Linq.Expressions.BinaryExpression binaryExpression = System.Linq.Expressions.Expression.MakeBinary( System.Linq.Expressions.ExpressionType.Subtract, System.Linq.Expressions.Expression.Constant(53), System.Linq.Expressions.Expression.Constant(14)); outputBlock.Text += binaryExpression.ToString() + "\n"; // This code produces the following output: // // (53 - 14)

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