Visualizer treeview

The treeview shows the various objects that make up the expression tree:

The emphasis is on displaying the structure of the expression tree:

• Only properties which return specific types which are part of the expression tree's structure are mapped to child nodes, such as Expression and CaseBlock

• There are no child nodes for properties which return collections; instead, each element gets its own child node. For example, LambdaExpression has a Parameters property, which returns a ReadOnlyCollection<ParameterExpression>; but the tree doesn't have a child node for Parameters, only for the individual elements -- Parameter[0], Parameter[1] etc.:

  

Node properties

Given the following node:

The following properties are shown for each node:

Description	In highlighted example	Applies to
Path from parent node	Left -	Every node
Node type	MemberAccess	ConstantExpression, DefaultExpression, closed-over variables
System.Type of expression	(int)	Expression and subtypes, CallSiteBinder and subtypes
Name	firstVariable	ParameterExpression if it has one, MemberExpression, MethodCallExpression LambdaExpression if it has one, MemberBinding -- bound member's name
Rendered value of the expression, as described here	= 5	ConstantExpression, DefaultExpression, closed-over variables