InvocationExpression Class

Represents an expression that applies a delegate or lambda expression to a list of argument expressions.

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

public sealed class InvocationExpression : Expression

Use the Invoke factory methods to create an InvocationExpression.

The NodeType of an InvocationExpression is Invoke.

The following example creates an InvocationExpression that represents invoking a lambda expression with specified arguments.

System.Linq.Expressions.Expression<Func<int, int, bool>> largeSumTest =
    (num1, num2) => (num1 + num2) > 1000;

// Create an InvocationExpression that represents applying 
// the arguments '539' and '281' to the lambda expression 'largeSumTest'.
System.Linq.Expressions.InvocationExpression invocationExpression =
    System.Linq.Expressions.Expression.Invoke(
        largeSumTest,
        System.Linq.Expressions.Expression.Constant(539),
        System.Linq.Expressions.Expression.Constant(281));

Console.WriteLine(invocationExpression.ToString());

// This code produces the following output: 
// 
// Invoke((num1, num2) => ((num1 + num2) > 1000),539,281)

System.Object
  System.Linq.Expressions.Expression
    System.Linq.Expressions.InvocationExpression

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5
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