Expression.Increment 方法

定義

命名空間:

System.Linq.Expressions

組件:

System.Linq.Expressions.dll

建立 UnaryExpression，表示運算式值遞增 1。

多載

Increment(Expression, MethodInfo)	建立 UnaryExpression，代表運算式遞增 1。
Increment(Expression)	建立 UnaryExpression，表示運算式值遞增 1。

Increment(Expression, MethodInfo)

來源:

UnaryExpression.cs

建立 UnaryExpression，代表運算式遞增 1。

public:
 static System::Linq::Expressions::UnaryExpression ^ Increment(System::Linq::Expressions::Expression ^ expression, System::Reflection::MethodInfo ^ method);

public static System.Linq.Expressions.UnaryExpression Increment (System.Linq.Expressions.Expression expression, System.Reflection.MethodInfo? method);

static member Increment : System.Linq.Expressions.Expression * System.Reflection.MethodInfo -> System.Linq.Expressions.UnaryExpression

Public Shared Function Increment (expression As Expression, method As MethodInfo) As UnaryExpression

參數

expression

Expression

要遞增的 Expression。

method

MethodInfo

表示實作方法的 MethodInfo。

傳回

UnaryExpression

表示遞增後運算式的 UnaryExpression。

備註

此表達式功能正常，而且不會變更傳遞給它的物件值。

Increment(Expression)

來源:

UnaryExpression.cs

建立 UnaryExpression，表示運算式值遞增 1。

public:
 static System::Linq::Expressions::UnaryExpression ^ Increment(System::Linq::Expressions::Expression ^ expression);

public static System.Linq.Expressions.UnaryExpression Increment (System.Linq.Expressions.Expression expression);

static member Increment : System.Linq.Expressions.Expression -> System.Linq.Expressions.UnaryExpression

Public Shared Function Increment (expression As Expression) As UnaryExpression

參數

expression

Expression

要遞增的 Expression。

傳回

UnaryExpression

表示遞增後運算式的 UnaryExpression。

範例

下列程式代碼範例示範如何建立代表遞增作業的表達式。

// 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.
Console.WriteLine(incrementExpr.ToString());

// The following statement first creates an expression tree,
// then compiles it, and then executes it.
Console.WriteLine(Expression.Lambda<Func<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

'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

備註

此表達式功能正常，而且不會變更傳遞給它的物件值。