Expression::Lambda Method (Expression^, array<ParameterExpression^>^)

 

Creates a LambdaExpression by first constructing a delegate type.

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

public:
static LambdaExpression^ Lambda(
	Expression^ body,
	... array<ParameterExpression^>^ parameters
)

Parameters

body
Type: System.Linq.Expressions::Expression^

An Expression to set the Body property equal to.

parameters
Type: array<System.Linq.Expressions::ParameterExpression^>^

An array of ParameterExpression objects to use to populate the Parameters collection.

Return Value

Type: System.Linq.Expressions::LambdaExpression^

A LambdaExpression that has the NodeType property equal to Lambda and the Body and Parameters properties set to the specified values.

Exception Condition
ArgumentNullException

body is null.

-or-

One or more elements of parameters are null.

ArgumentException

parameters contains more than sixteen elements.

The parameters parameter must not have more than sixteen elements.

The elements of parameters must be reference equal to the parameter expressions in body.

This method constructs an appropriate delegate type from one of the System.Func generic delegates. It then passes the delegate type to one of the Lambda factory methods to create a LambdaExpression.

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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