Expression.AddAssign Metode

Definisi

Ruang nama:

System.Linq.Expressions

Rakitan:

System.Linq.Expressions.dll

BinaryExpression Membuat yang mewakili operasi penugasan tambahan yang tidak memiliki pemeriksaan luapan.

Overload

AddAssign(Expression, Expression)	BinaryExpression Membuat yang mewakili operasi penugasan tambahan yang tidak memiliki pemeriksaan luapan.
AddAssign(Expression, Expression, MethodInfo)	BinaryExpression Membuat yang mewakili operasi penugasan tambahan yang tidak memiliki pemeriksaan luapan.
AddAssign(Expression, Expression, MethodInfo, LambdaExpression)	BinaryExpression Membuat yang mewakili operasi penugasan tambahan yang tidak memiliki pemeriksaan luapan.

AddAssign(Expression, Expression)

Sumber:

BinaryExpression.cs

BinaryExpression Membuat yang mewakili operasi penugasan tambahan yang tidak memiliki pemeriksaan luapan.

public:
 static System::Linq::Expressions::BinaryExpression ^ AddAssign(System::Linq::Expressions::Expression ^ left, System::Linq::Expressions::Expression ^ right);

public static System.Linq.Expressions.BinaryExpression AddAssign (System.Linq.Expressions.Expression left, System.Linq.Expressions.Expression right);

static member AddAssign : System.Linq.Expressions.Expression * System.Linq.Expressions.Expression -> System.Linq.Expressions.BinaryExpression

Public Shared Function AddAssign (left As Expression, right As Expression) As BinaryExpression

Parameter

left

Expression

Untuk Expression mengatur properti sama Left dengan.

right

Expression

Untuk Expression mengatur properti sama Right dengan.

Mengembalikan

BinaryExpression

BinaryExpression yang memiliki NodeType properti yang sama dengan AddAssign dan Left properti dan Right diatur ke nilai yang ditentukan.

Contoh

Contoh kode berikut menunjukkan cara membuat ekspresi yang menambahkan nilai ke variabel bilangan bulat lalu menetapkan hasil operasi ke variabel .

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

// The Parameter expression is used to create a variable.
ParameterExpression variableExpr = Expression.Variable(typeof(int), "sampleVar");

// The block expression enables you to execute several expressions sequentually.
// In this bloc, the variable is first initialized with 1.
// Then the AddAssign method adds 2 to the variable and assigns the result to the variable.
BlockExpression addAssignExpr = Expression.Block(
    new ParameterExpression[] { variableExpr },
    Expression.Assign(variableExpr, Expression.Constant(1)),
    Expression.AddAssign(
        variableExpr,
        Expression.Constant(2)
    )
);

// Print out the expression from the block expression.
Console.WriteLine("The expressions from the block expression:");
foreach (var expr in addAssignExpr.Expressions)
    Console.WriteLine(expr.ToString());

Console.WriteLine("The result of executing the expression tree:");
// The following statement first creates an expression tree,
// then compiles it, and then executes it.
Console.WriteLine(Expression.Lambda<Func<int>>(addAssignExpr).Compile()());

// This code example produces the following output:
//
// The expressions from the block expression:
// (sampleVar = 1)
// (sampleVar += 2)

// The result of executing the expression tree:
// 3

' Add the following directive to your file:
' Imports System.Linq.Expressions 

' The parameter expression is used to create a variable.
Dim variableExpr As ParameterExpression = Expression.Variable(GetType(Integer), "sampleVar")

' The block expression enables you to execute several expressions sequentually.
' In this block, the variable is first initialized with 1. 
' Then the AddAssign method adds 2 to the variable and assigns the result to the variable.
Dim addAssignExpr As BlockExpression = Expression.Block(
    New ParameterExpression() {variableExpr},
    Expression.Assign(variableExpr, Expression.Constant(1)),
    Expression.AddAssign(
        variableExpr,
        Expression.Constant(2)
    )
)

' Print the expression from the block expression.
Console.WriteLine("The expressions from the block expression:")
For Each expr As Expression In addAssignExpr.Expressions
    Console.WriteLine(expr.ToString())
Next

Console.WriteLine("The result of executing the expression tree:")
' The following statement first creates an expression tree,
' then compiles it, and then executes it.
Console.WriteLine(Expression.Lambda(Of Func(Of Integer))(addAssignExpr).Compile()())

' This code example produces the following output:
'
' The expressions from the block expression:
' (sampleVar = 1)
' (sampleVar += 2)

' The result of executing the expression tree:
' 3

AddAssign(Expression, Expression, MethodInfo)

Sumber:

BinaryExpression.cs

BinaryExpression Membuat yang mewakili operasi penugasan tambahan yang tidak memiliki pemeriksaan luapan.

public:
 static System::Linq::Expressions::BinaryExpression ^ AddAssign(System::Linq::Expressions::Expression ^ left, System::Linq::Expressions::Expression ^ right, System::Reflection::MethodInfo ^ method);

public static System.Linq.Expressions.BinaryExpression AddAssign (System.Linq.Expressions.Expression left, System.Linq.Expressions.Expression right, System.Reflection.MethodInfo? method);

static member AddAssign : System.Linq.Expressions.Expression * System.Linq.Expressions.Expression * System.Reflection.MethodInfo -> System.Linq.Expressions.BinaryExpression

Public Shared Function AddAssign (left As Expression, right As Expression, method As MethodInfo) As BinaryExpression

Parameter

left

Expression

Untuk Expression mengatur properti sama Left dengan.

right

Expression

Untuk Expression mengatur properti sama Right dengan.

method

MethodInfo

A MethodInfo untuk mengatur Method properti sama dengan.

Mengembalikan

BinaryExpression

BinaryExpression yang memiliki NodeType properti yang sama dengan AddAssign dan Leftproperti , , Rightdan Method diatur ke nilai yang ditentukan.

AddAssign(Expression, Expression, MethodInfo, LambdaExpression)

Sumber:

BinaryExpression.cs

BinaryExpression Membuat yang mewakili operasi penugasan tambahan yang tidak memiliki pemeriksaan luapan.

public:
 static System::Linq::Expressions::BinaryExpression ^ AddAssign(System::Linq::Expressions::Expression ^ left, System::Linq::Expressions::Expression ^ right, System::Reflection::MethodInfo ^ method, System::Linq::Expressions::LambdaExpression ^ conversion);

public static System.Linq.Expressions.BinaryExpression AddAssign (System.Linq.Expressions.Expression left, System.Linq.Expressions.Expression right, System.Reflection.MethodInfo? method, System.Linq.Expressions.LambdaExpression? conversion);

static member AddAssign : System.Linq.Expressions.Expression * System.Linq.Expressions.Expression * System.Reflection.MethodInfo * System.Linq.Expressions.LambdaExpression -> System.Linq.Expressions.BinaryExpression

Public Shared Function AddAssign (left As Expression, right As Expression, method As MethodInfo, conversion As LambdaExpression) As BinaryExpression

Parameter

left

Expression

Untuk Expression mengatur properti sama Left dengan.

right

Expression

Untuk Expression mengatur properti sama Right dengan.

method

MethodInfo

A MethodInfo untuk mengatur Method properti sama dengan.

conversion

LambdaExpression

A LambdaExpression untuk mengatur Conversion properti sama dengan.

Mengembalikan

BinaryExpression

BinaryExpression yang memiliki NodeType properti yang sama dengan AddAssign dan Leftproperti , , RightMethod, dan Conversion diatur ke nilai yang ditentukan.