Expression.Return Expression.Return Expression.Return Expression.Return Method

定義

return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement.

オーバーロード

Return(LabelTarget) Return(LabelTarget) Return(LabelTarget) Return(LabelTarget)

return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement.

Return(LabelTarget, Expression) Return(LabelTarget, Expression) Return(LabelTarget, Expression) Return(LabelTarget, Expression)

return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement. ジャンプ時にラベルに渡す値を指定できます。The value passed to the label upon jumping can be specified.

Return(LabelTarget, Type) Return(LabelTarget, Type) Return(LabelTarget, Type)

型を指定して、return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement with the specified type.

Return(LabelTarget, Expression, Type) Return(LabelTarget, Expression, Type) Return(LabelTarget, Expression, Type)

型を指定して、return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement with the specified type. ジャンプ時にラベルに渡す値を指定できます。The value passed to the label upon jumping can be specified.

Return(LabelTarget) Return(LabelTarget) Return(LabelTarget) Return(LabelTarget)

return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement.

public:
 static System::Linq::Expressions::GotoExpression ^ Return(System::Linq::Expressions::LabelTarget ^ target);
public static System.Linq.Expressions.GotoExpression Return (System.Linq.Expressions.LabelTarget target);
static member Return : System.Linq.Expressions.LabelTarget -> System.Linq.Expressions.GotoExpression
Public Shared Function Return (target As LabelTarget) As GotoExpression

パラメーター

target
LabelTarget LabelTarget LabelTarget LabelTarget

LabelTarget のジャンプ先の GotoExpressionThe LabelTarget that the GotoExpression will jump to.

戻り値

Return と等しい GotoExpressionKind に設定された Target プロパティ、およびジャンプ時にジャンプ先のラベルに渡される null 値を含む targetA GotoExpression with Kind equal to Return, the Target property set to target, and a null value to be passed to the target label upon jumping.

Return(LabelTarget, Expression) Return(LabelTarget, Expression) Return(LabelTarget, Expression) Return(LabelTarget, Expression)

return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement. ジャンプ時にラベルに渡す値を指定できます。The value passed to the label upon jumping can be specified.

public:
 static System::Linq::Expressions::GotoExpression ^ Return(System::Linq::Expressions::LabelTarget ^ target, System::Linq::Expressions::Expression ^ value);
public static System.Linq.Expressions.GotoExpression Return (System.Linq.Expressions.LabelTarget target, System.Linq.Expressions.Expression value);
static member Return : System.Linq.Expressions.LabelTarget * System.Linq.Expressions.Expression -> System.Linq.Expressions.GotoExpression
Public Shared Function Return (target As LabelTarget, value As Expression) As GotoExpression

パラメーター

target
LabelTarget LabelTarget LabelTarget LabelTarget

LabelTarget のジャンプ先の GotoExpressionThe LabelTarget that the GotoExpression will jump to.

value
Expression Expression Expression Expression

ジャンプ時に関連付けられているラベルに渡される値。The value that will be passed to the associated label upon jumping.

戻り値

Continue と等しい GotoExpressionKind に設定された Target プロパティ、およびジャンプ時にジャンプ先のラベルに渡される target を含む valueA GotoExpression with Kind equal to Continue, the Target property set to target, and value to be passed to the target label upon jumping.

次の例を含む式を作成する方法を示します、Returnメソッド。The following example demonstrates how to create an expression that contains the Return method.

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

// A label expression of the void type that is the target for Expression.Return().
LabelTarget returnTarget = Expression.Label();

// This block contains a GotoExpression that represents a return statement with no value.
// It transfers execution to a label expression that is initialized with the same LabelTarget as the GotoExpression.
// The types of the GotoExpression, label expression, and LabelTarget must match.
BlockExpression blockExpr =
    Expression.Block(
        Expression.Call(typeof(Console).GetMethod("WriteLine", new Type[] { typeof(string) }), Expression.Constant("Return")),
        Expression.Return(returnTarget),
        Expression.Call(typeof(Console).GetMethod("WriteLine", new Type[] { typeof(string) }), Expression.Constant("Other Work")),
        Expression.Label(returnTarget)
    );

// The following statement first creates an expression tree,
// then compiles it, and then runs it.
Expression.Lambda<Action>(blockExpr).Compile()();

// This code example produces the following output:
//
// Return

// "Other Work" is not printed because 
// the Return expression transfers execution from Expression.Return(returnTarget)
// to Expression.Label(returnTarget).
' Add the following directive to the file:
' Imports System.Linq.Expressions  
' A label expression of the void type that is the target for Expression.Return().
Dim returnTarget As LabelTarget = Expression.Label()

' This block contains a GotoExpression that represents a return statement with no value.
' It transfers execution to a label expression that is initialized with the same LabelTarget as the GotoExpression.
' The types of the GotoExpression, label expression, and LabelTarget must match.
Dim blockExpr As BlockExpression =
      Expression.Block(
          Expression.Call(GetType(Console).GetMethod("WriteLine", New Type() {GetType(String)}), Expression.Constant("Return")),
          Expression.Return(returnTarget),
          Expression.Call(GetType(Console).GetMethod("WriteLine", New Type() {GetType(String)}), Expression.Constant("Other Work")),
          Expression.Label(returnTarget)
      )

' The following statement first creates an expression tree,
' then compiles it, and then runs it.
Expression.Lambda(Of Action)(blockExpr).Compile()()

' This code example produces the following output:
'
' Return

' "Other Work" is not printed because 
' the Return expression transfers execution from Return(returnTarget)
' to Expression.Label(returnTarget).

Return(LabelTarget, Type) Return(LabelTarget, Type) Return(LabelTarget, Type)

型を指定して、return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement with the specified type.

public:
 static System::Linq::Expressions::GotoExpression ^ Return(System::Linq::Expressions::LabelTarget ^ target, Type ^ type);
public static System.Linq.Expressions.GotoExpression Return (System.Linq.Expressions.LabelTarget target, Type type);
static member Return : System.Linq.Expressions.LabelTarget * Type -> System.Linq.Expressions.GotoExpression

パラメーター

target
LabelTarget LabelTarget LabelTarget LabelTarget

LabelTarget のジャンプ先の GotoExpressionThe LabelTarget that the GotoExpression will jump to.

type
Type Type Type Type

Type プロパティを等しく設定する TypeAn Type to set the Type property equal to.

戻り値

Return と等しい GotoExpressionKind に設定された Target プロパティ、target に設定された Type プロパティ、およびジャンプ時にジャンプ先のラベルに渡される null 値を含む typeA GotoExpression with Kind equal to Return, the Target property set to target, the Type property set to type, and a null value to be passed to the target label upon jumping.

Return(LabelTarget, Expression, Type) Return(LabelTarget, Expression, Type) Return(LabelTarget, Expression, Type)

型を指定して、return ステートメントを表す GotoExpression を作成します。Creates a GotoExpression representing a return statement with the specified type. ジャンプ時にラベルに渡す値を指定できます。The value passed to the label upon jumping can be specified.

public:
 static System::Linq::Expressions::GotoExpression ^ Return(System::Linq::Expressions::LabelTarget ^ target, System::Linq::Expressions::Expression ^ value, Type ^ type);
public static System.Linq.Expressions.GotoExpression Return (System.Linq.Expressions.LabelTarget target, System.Linq.Expressions.Expression value, Type type);
static member Return : System.Linq.Expressions.LabelTarget * System.Linq.Expressions.Expression * Type -> System.Linq.Expressions.GotoExpression

パラメーター

target
LabelTarget LabelTarget LabelTarget LabelTarget

LabelTarget のジャンプ先の GotoExpressionThe LabelTarget that the GotoExpression will jump to.

value
Expression Expression Expression Expression

ジャンプ時に関連付けられているラベルに渡される値。The value that will be passed to the associated label upon jumping.

type
Type Type Type Type

Type プロパティを等しく設定する TypeAn Type to set the Type property equal to.

戻り値

Continue と等しい GotoExpressionKind に設定された Target プロパティ、target に設定された Type プロパティ、およびジャンプ時にジャンプ先のラベルに渡される type を含む valueA GotoExpression with Kind equal to Continue, the Target property set to target, the Type property set to type, and value to be passed to the target label upon jumping.

適用対象