Expression.Increment Method (Expression)
Creates a UnaryExpression that represents the incrementing of the expression value by 1.
Assembly: System.Core (in System.Core.dll)
'Declaration Public Shared Function Increment ( _ expression As Expression _ ) As UnaryExpression
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. 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
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