DbElementExpression.Accept 方法

定义

重载

Accept(DbExpressionVisitor)

为不生成结果值的表达式实现访问者模式。Implements the visitor pattern for expressions that do not produce a result value.

Accept<TResultType>(DbExpressionVisitor<TResultType>)

为生成特定类型的结果值的表达式实现访问者模式。Implements the visitor pattern for expressions that produce a result value of a specific type.

Accept(DbExpressionVisitor)

为不生成结果值的表达式实现访问者模式。Implements the visitor pattern for expressions that do not produce a result value.

public:
 override void Accept(System::Data::Common::CommandTrees::DbExpressionVisitor ^ visitor);
public override void Accept (System.Data.Common.CommandTrees.DbExpressionVisitor visitor);
override this.Accept : System.Data.Common.CommandTrees.DbExpressionVisitor -> unit
Public Overrides Sub Accept (visitor As DbExpressionVisitor)

参数

visitor
DbExpressionVisitor

DbExpressionVisitor 的一个实例。An instance of DbExpressionVisitor.

例外

visitornullvisitor is null.

适用于

Accept<TResultType>(DbExpressionVisitor<TResultType>)

为生成特定类型的结果值的表达式实现访问者模式。Implements the visitor pattern for expressions that produce a result value of a specific type.

public:
generic <typename TResultType>
 override TResultType Accept(System::Data::Common::CommandTrees::DbExpressionVisitor<TResultType> ^ visitor);
public override TResultType Accept<TResultType> (System.Data.Common.CommandTrees.DbExpressionVisitor<TResultType> visitor);
override this.Accept : System.Data.Common.CommandTrees.DbExpressionVisitor<'ResultType> -> 'ResultType
Public Overrides Function Accept(Of TResultType) (visitor As DbExpressionVisitor(Of TResultType)) As TResultType

类型参数

TResultType

visitor 生成的结果的类型。The type of the result produced by visitor.

参数

visitor
DbExpressionVisitor<TResultType>

生成特定类型结果值的类型化 DbExpressionVisitor 的一个实例。An instance of a typed DbExpressionVisitor that produces a result value of a specific type.

返回

TResultType

一个由 DbExpressionVisitor 生成的属于特定类型的结果值。A result value of a specific type produced by DbExpressionVisitor.

例外

visitornullvisitor is null.

适用于