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)

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


Type: System.Linq.Expressions.ExpressionType
The ExpressionType that specifies the type of unary operation.
Type: System.Linq.Expressions.Expression
An Expression that represents the operand.
Type: System.Type
The Type that specifies the type to be converted to (pass Nothing if not applicable).
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.


operand is Nothing.


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.


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.