Expression.New Method (ConstructorInfo, IEnumerable<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,
	IEnumerable<Expression> arguments
)

Parameters

constructor
Type: System.Reflection.ConstructorInfo

The ConstructorInfo to set the Constructor property equal to.

arguments
Type: System.Collections.Generic.IEnumerable<Expression>

An IEnumerable<T> that contains 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.

Exception Condition
ArgumentNullException

constructor is null.

-or-

An element of arguments is null.

ArgumentException

The arguments parameter does not contain the same number of elements as 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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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