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

此運算式可正常運作，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

下列程式碼範例示範如何建立代表遞增作業的運算式。

// 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

此運算式可正常運作，而且不會變更傳遞給它的 物件值。