Export (0) Print
Expand All

DbExpressionBuilder.Invoke Method (DbLambda, DbExpression[])

.NET Framework 4.5

Creates a new DbLambdaExpression representing the application of the specified Lambda function to the given arguments.

Namespace:  System.Data.Common.CommandTrees.ExpressionBuilder
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public static DbLambdaExpression Invoke(
	this DbLambda lambda,
	params DbExpression[] arguments


Type: System.Data.Common.CommandTrees.DbLambda

A DbLambda instance representing the Lambda function to apply.

Type: System.Data.Common.CommandTrees.DbExpression[]

Expressions that provide the arguments.

Return Value

Type: System.Data.Common.CommandTrees.DbLambdaExpression
A new DbLambdaExpression representing the Lambda function application.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type DbLambda. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).


lambda or arguments is null.


The count of arguments does not equal the number of variables declared by lambda, or arguments contains an expression that has a result type that is not equal or promotable to the corresponding variable type.

.NET Framework

Supported in: 4.5

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.

© 2014 Microsoft