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Expression.MakeUnary Method (ExpressionType, Expression, Type)

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.

ExceptionCondition
ArgumentException

unaryType does not correspond to a unary expression node.

ArgumentNullException

operand is null.

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.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5
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