Expression.Empty Expression.Empty Expression.Empty Expression.Empty Method

Definition

Creates an empty expression that has Void type.

public:
 static System::Linq::Expressions::DefaultExpression ^ Empty();
public static System.Linq.Expressions.DefaultExpression Empty ();
static member Empty : unit -> System.Linq.Expressions.DefaultExpression
Public Shared Function Empty () As DefaultExpression

Returns

Examples

The following code example shows how to create an empty expression and add it to a block expression.

// Add the following directive to your file:
// using System.Linq.Expressions;  

// This statement creates an empty expression.
DefaultExpression emptyExpr = Expression.Empty();

// The empty expression can be used where an expression is expected, but no action is desired.
// For example, you can use the empty expression as the last expression in the block expression.
// In this case the block expression's return value is void.
var emptyBlock = Expression.Block(emptyExpr);

' Add the following directive to your file:
' Imports System.Linq.Expressions 

' This statement creates an empty expression.
Dim emptyExpr As DefaultExpression = Expression.Empty()

' An empty expression can be used where an expression is expected but no action is desired.
' For example, you can use an empty expression as the last expression in a block expression.
' In this case, the block expression's return value is void.
Dim emptyBlock = Expression.Block(emptyExpr)

Remarks

An empty expression can be used where an expression is expected but no action is desired. For example, you can use an empty expression as the last expression in a block expression. In this case, the block expression's return value is void.

Applies to