Expression.Increment Method (Expression)

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.

'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.
outputBlock.Text &= incrementExpr.ToString() & vbCrLf

' The following statement first creates an expression tree,
' then compiles it, and then executes it.
outputBlock.Text &= Expression.Lambda(Of Func(Of Double))(incrementExpr).Compile()() & vbCrLf

' The value of the variable did not change,
' because the expression is functional.
outputBlock.Text &= "object: " & num & vbCrLf

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

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

// This expression represents an increment operation. 
double num = 5.5;
Expression incrementExpr = Expression.Increment(
                            Expression.Constant(num)
                        );


// Print out the expression.
outputBlock.Text += incrementExpr.ToString() + "\n";

// The following statement first creates an expression tree,
// then compiles it, and then executes it.
outputBlock.Text += Expression.Lambda<Func<double>>(incrementExpr).Compile()() + "\n";

// The value of the variable did not change,
// because the expression is functional.
outputBlock.Text += "object: " + num + "\n";

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