PropertyExpression is missing

c# .net lambda expression expression-trees
Alex Zhukovskiy picture Alex Zhukovskiy · Apr 30, 2015 · Viewed 8.1k times · Source

I try to write a simple example using Expressions, but have a strange bug: I can't use PropertyExpression at compile time. When I write it I get an error and it doesn't compile enter image description here But in runtime at breakpoint I can write 

var runtimeBody = (System.Linq.Expressions.PropertyExpression)body2;

and it works, and casts as expected. Framework 4.5.1 is selected as target.

Answer

Sébastien Sevrin picture Sébastien Sevrin · Apr 30, 2015

PropertyExpression is internal

You should cast it to System.Linq.Expressions.MemberExpression instead, as suggested in this post.

Related questions

converting a .net Func<T> to a .net Expression<Func<T>>

Going from a lambda to an Expression is easy using a method call... public void GimmeExpression(Expression<Func<T>> expression) { ((MemberExpression)expression.Body).Member.Name; // "DoStuff" } public void SomewhereElse() { GimmeExpression(() => thing.DoStuff()); } But I would …

Read More
Expression for Type members results in different Expressions (MemberExpression, UnaryExpression)

Description I have a expression to point on a property of my type. But it does not work for every property type. "Does not mean" means it result in different expression types. I thought it will ever result in a …

Read More
LINQ: "contains" and a Lambda query

I have a List<BuildingStatus> called buildingStatus. I'd like to check whether it contains a status whose char code (returned by GetCharCode()) equals some variable, v.Status. Is there some way of doing this, along the lines of …

Read More