Expression.New Method (ConstructorInfo, Expression[])

Creates a NewExpression that represents calling the specified constructor with the specified arguments.

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

public static NewExpression New(
	ConstructorInfo constructor,
	params Expression[] arguments
)

Parameters

constructor
Type: System.Reflection.ConstructorInfo

The ConstructorInfo to set the Constructor property equal to.

arguments
Type: System.Linq.Expressions.Expression[]

An array of Expression objects to use to populate the Arguments collection.

Return Value

Type: System.Linq.Expressions.NewExpression
A NewExpression that has the NodeType property equal to New and the Constructor and Arguments properties set to the specified values.

ExceptionCondition
ArgumentNullException

constructor is null.

-or-

An element of arguments is null.

ArgumentException

The length of arguments does match the number of parameters for the constructor that constructor represents.

-or-

The Type property of an element of arguments is not assignable to the type of the corresponding parameter of the constructor that constructor represents.

The arguments parameter must contain the same number of elements as the number of parameters for the constructor represented by constructor. If arguments is null, it is considered empty, and the Arguments property of the resulting NewExpression is an empty collection.

The Type property of the resulting NewExpression represents the declaring type of the constructor represented by constructor. The Members property is an empty collection.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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