Expression.Lambda Method (Expression, ParameterExpression[])


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Creates a LambdaExpression by first constructing a delegate type.

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

static member Lambda : 
        body:Expression *
        [<ParamArrayAttribute>] parameters:ParameterExpression[] -> LambdaExpression


Type: System.Linq.Expressions.Expression

An Expression to set the Body property equal to.

Type: 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

body is null.


One or more elements of parameters are null.


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
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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