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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)

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

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).
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 null.

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, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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