Expression.Continue メソッド

定義

名前空間:

System.Linq.Expressions

アセンブリ:

System.Linq.Expressions.dll

continue ステートメントを表す GotoExpression を作成します。

オーバーロード

Continue(LabelTarget)	continue ステートメントを表す GotoExpression を作成します。
Continue(LabelTarget, Type)	型を指定して、continue ステートメントを表す GotoExpression を作成します。

Continue(LabelTarget)

ソース:

GotoExpression.cs

continue ステートメントを表す GotoExpression を作成します。

public:
 static System::Linq::Expressions::GotoExpression ^ Continue(System::Linq::Expressions::LabelTarget ^ target);

public static System.Linq.Expressions.GotoExpression Continue (System.Linq.Expressions.LabelTarget target);

static member Continue : System.Linq.Expressions.LabelTarget -> System.Linq.Expressions.GotoExpression

Public Shared Function Continue (target As LabelTarget) As GotoExpression

パラメーター

target

LabelTarget

LabelTarget のジャンプ先の GotoExpression。

戻り値

GotoExpression

Continue と等しい GotoExpression、Kind 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 target。

例

次の例では、 メソッドを使用するループ式を作成する方法を Continue 示します。

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

// A label that is used by a break statement and a loop.
LabelTarget breakLabel = Expression.Label();

// A label that is used by the Continue statement and the loop it refers to.
LabelTarget continueLabel = Expression.Label();

// This expression represents a Continue statement.
Expression continueExpr = Expression.Continue(continueLabel);

// A variable that triggers the exit from the loop.
ParameterExpression count = Expression.Parameter(typeof(int));

// A loop statement.
Expression loopExpr = Expression.Loop(
    Expression.Block(
        Expression.IfThen(
            Expression.GreaterThan(count, Expression.Constant(3)),
            Expression.Break(breakLabel)
        ),
        Expression.PreIncrementAssign(count),
        Expression.Call(
                    null,
                    typeof(Console).GetMethod("WriteLine", new Type[] { typeof(String) }),
                    Expression.Constant("Loop")
                ),
        continueExpr,
        Expression.PreDecrementAssign(count)
    ),
    breakLabel,
    continueLabel
);

// The following statement first creates an expression tree,
// then compiles it, and then runs it.
// Without the Continue statement, the loop would go on forever.
Expression.Lambda<Action<int>>(loopExpr, count).Compile()(1);

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

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

' A label that is used by a break statement and a loop. 
Dim breakLabel As LabelTarget = Expression.Label()

' A label that is used by the Continue statement and the loop it refers to.
Dim continueLabel As LabelTarget = Expression.Label()

' This expression represents a Continue statement.
Dim continueExpr As Expression = Expression.Continue(continueLabel)

' A variable that triggers the exit from the loop.
Dim count As ParameterExpression = Expression.Parameter(GetType(Integer))

' A loop statement.
Dim loopExpr As Expression = Expression.Loop(
       Expression.Block(
           Expression.IfThen(
               Expression.GreaterThan(count, Expression.Constant(3)),
               Expression.Break(breakLabel)
           ),
           Expression.PreIncrementAssign(count),
           Expression.Call(
                       Nothing,
                       GetType(Console).GetMethod("WriteLine", New Type() {GetType(String)}),
                       Expression.Constant("Loop")
                   ),
           continueExpr,
           Expression.PreDecrementAssign(count)
       ),
       breakLabel,
       continueLabel
   )

' The following statement first creates an expression tree,
' then compiles it, and then runs it.
' Without the Continue statement, the loop would go on forever.
Expression.Lambda(Of Action(Of Integer))(loopExpr, count).Compile()(1)

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

Continue(LabelTarget, Type)

ソース:

GotoExpression.cs

型を指定して、continue ステートメントを表す GotoExpression を作成します。

public:
 static System::Linq::Expressions::GotoExpression ^ Continue(System::Linq::Expressions::LabelTarget ^ target, Type ^ type);

public static System.Linq.Expressions.GotoExpression Continue (System.Linq.Expressions.LabelTarget target, Type type);

static member Continue : System.Linq.Expressions.LabelTarget * Type -> System.Linq.Expressions.GotoExpression

Public Shared Function Continue (target As LabelTarget, type As Type) As GotoExpression

パラメーター

target

LabelTarget

LabelTarget のジャンプ先の GotoExpression。

type

Type

Type プロパティを等しく設定する Type。

戻り値

GotoExpression

Continue と等しい GotoExpression、Kind 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 type。