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Expression.MakeUnary Method (ExpressionType, Expression, Type, MethodInfo)

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

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

'Declaration
Public Shared Function MakeUnary ( _
	unaryType As ExpressionType, _
	operand As Expression, _
	type As Type, _
	method As MethodInfo _
) As UnaryExpression

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 Nothing if not applicable).

method
Type: System.Reflection.MethodInfo

The MethodInfo that represents the implementing method.

Return Value

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

ExceptionCondition
ArgumentNullException

operand is Nothing.

ArgumentException

unaryType does not correspond to a unary expression node.

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 and method parameters are ignored if they do not apply to the factory method that is called.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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