Top "Expression-trees" questions

Expression Trees are an abstract representation of code in a tree structure where each node of the tree represents a programming construct (conditional, assignment, method call, etc.

Why would you use Expression<Func<T>> rather than Func<T>?

I understand lambdas and the Func and Action delegates. But expressions stump me. In what circumstances would you use an …

c# delegates lambda expression-trees
Retrieving Property name from lambda expression

Is there a better way to get the Property name when passed in via a lambda expression? Here is what …

c# linq lambda expression-trees
How do I apply OrderBy on an IQueryable using a string column name within a generic extension method?

public static IQueryable<TResult> ApplySortFilter<T, TResult>(this IQueryable<T> query, string columnName) where …

c# .net linq entity-framework expression-trees
How do I dynamically create an Expression<Func<MyClass, bool>> predicate from Expression<Func<MyClass, string>>?

I trying to append where predicates and my goal is to create the same expression as: Services.Where(s => …

c# linq expression-trees linq-expressions
Access the value of a member expression

If i have a product. var p = new Product { Price = 30 }; and i have the following linq query. var q = repo.…

c# linq lambda expression-trees
How does PredicateBuilder work

C# in a Nutshell has a free class called PredicateBuilder which constructs LINQ predicates piece by piece available here. Here's …

c# .net linq expression-trees predicatebuilder
Serializing and Deserializing Expression Trees in C#

Is there a way to Deserialize Expressions in C#, I would like to store Expressions in a Database and load …

c# serialization expression-trees
What are Expression Trees, how do you use them, and why would you use them?

I just came across the concept of expression trees which I have heard multiple times. I just want to understand …

c# .net linq expression-trees
How do I create an expression tree to represent 'String.Contains("term")' in C#?

I am just getting started with expression trees so I hope this makes sense. I am trying to create an …

c# .net lambda expression-trees
Compiled C# Lambda Expressions Performance

Consider the following simple manipulation over a collection: static List<int> x = new List<int>() { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; var …

c# performance lambda expression-trees