Expression.Increment Method (Expression)

 

Creates a UnaryExpression that represents the incrementing of the expression value by 1.

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

Public Shared Function Increment (
	expression As Expression
) As UnaryExpression

Parameters

expression
Type: System.Linq.Expressions.Expression

An Expression to increment.

Return Value

Type: System.Linq.Expressions.UnaryExpression

A UnaryExpression that represents the incremented expression.

This expression is functional and does not change the value of the object that is passed to it.

The following code example shows how to create an expression that represents an increment operation.

'Add the following directive to your file:
' Imports System.Linq.Expressions   
Dim num As Double = 5.5
' This expression represents an increment operation. 
Dim incrementExpr As Expression = Expression.Increment(
                            Expression.Constant(num)
                        )

' Print the expression.
Console.WriteLine(incrementExpr.ToString())

' The following statement first creates an expression tree,
' then compiles it, and then executes it.
Console.WriteLine(Expression.Lambda(Of Func(Of Double))(incrementExpr).Compile()())

' The value of the variable did not change,
' because the expression is functional.
Console.WriteLine("object: " & num)

' This code example produces the following output:
'
' Increment(5.5)
' 6.5
' object: 5.5

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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