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Expression.MakeUnary Method (ExpressionType, Expression, Type)

Silverlight

Creates a UnaryExpression, given an operand, by calling the appropriate factory method.

Namespace: System.Linq.Expressions
Assembly: System.Core (in System.Core.dll)

public static UnaryExpression MakeUnary(
	ExpressionType unaryType,
	Expression operand,
	Type type
)

Parameters

unaryType: Type: System.Linq.Expressions.ExpressionType
The ExpressionType that specifies the type of unary operation.

operand: Type: System.Linq.Expressions.Expression
An Expression that represents the operand.

type: Type: System.Type
The Type that specifies the type to be converted to (pass null if not applicable).

Return Value

Type: System.Linq.Expressions.UnaryExpression
The UnaryExpression that results from calling the appropriate factory method.

Exceptions

Exception	Condition
ArgumentNullException	operand is null.
ArgumentException	unaryType does not correspond to a unary expression node.

Remarks

The unaryType parameter determines which UnaryExpression factory method this method calls. For example, if unaryType is equal to Convert, this method invokes Convert. The type parameter is ignored if it does not apply to the factory method that is called.

Version Information