Expression.VisitChildren(ExpressionVisitor) Method

Definition

Namespace:

System.Linq.Expressions

Assembly:

System.Linq.Expressions.dll

Source:

Expression.cs

Reduces the node and then calls the visitor delegate on the reduced expression. The method throws an exception if the node is not reducible.

protected public:
 virtual System::Linq::Expressions::Expression ^ VisitChildren(System::Linq::Expressions::ExpressionVisitor ^ visitor);

protected internal virtual System.Linq.Expressions.Expression VisitChildren (System.Linq.Expressions.ExpressionVisitor visitor);

abstract member VisitChildren : System.Linq.Expressions.ExpressionVisitor -> System.Linq.Expressions.Expression
override this.VisitChildren : System.Linq.Expressions.ExpressionVisitor -> System.Linq.Expressions.Expression

Protected Friend Overridable Function VisitChildren (visitor As ExpressionVisitor) As Expression

Parameters

visitor

ExpressionVisitor

An instance of Func<T,TResult>.

Returns

Expression

The expression being visited, or an expression which should replace it in the tree.

Remarks

Override this method to provide logic to walk the node's children. A typical implementation will call visitor.Visit on each of its children, and if any of them change, should return a new copy of itself with the modified children.