Skip to main content

🚀 In our NEW AI Bootcamp you'll build a working app in 28 days, no experience required. Free to all subscription levels.

✨ Earn college credits in Cybersecurity, JS, HTML, CSS and Python

Join the Treehouse affiliate program and earn 25% recurring commission! 🤑

  • Treehouse Logo
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
    • All Courses
    • Tracks
    • AI Bootcamp
    • College Credit
    • Techdegree Bootcamps
    • Front End Development
    • Full Stack JavaScript
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
    • Explore
    • Career Toolbox
    • Free Treehouse Near Me
    • Affiliates
    • Blog
    • Support
    • About
    • Learn
    • Beginner's Guide to Coding
    • Data Analysis with SQL & Python
    • Front-End Web Development
    • Python Programming Basics
    • Techdegree Bootcamp Overview
    • UX Design Fundamentals
    • AI Tools for Beginners
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks AI Bootcamp College Credit
  • Techdegree Bootcamps Front End Web Development Full Stack JavaScript
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Explore Career Toolbox Free Treehouse Near Me Affiliates Blog Support About
    Learn Beginner's Guide to Coding Data Analysis with SQL & Python Front-End Web Development Python Programming Basics Techdegree Bootcamp Overview UX Design Fundamentals AI Tools for Beginners
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
Loading banner... Start your free trial at Treehouse
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • APIs
      • • Coding for Kids
      • • College Credit
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Game Development
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • No-Code
      • • PHP
      • • Professional Growth
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
      • • Swift
      • • Vibe Coding
  • Jeffrey Otano
    Jeffrey Otano
    3,099 Points

    Not sure what I am doing wrong here?

    Posted March 18, 2018 11:16pm by Jeffrey Otano
    Jeffrey Otano
    3,099 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    1 Answer

  • tafadzwa manzunzu
    tafadzwa manzunzu
    3,601 Points

    help please

    Posted September 27, 2017 10:10am by tafadzwa manzunzu
    tafadzwa manzunzu
    3,601 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    1 Answer

  • Amy Shah
    Amy Shah
    25,337 Points

    I think I am very close - I have created the OrderByDescending LINQ query

    Posted March 11, 2017 1:02am by Amy Shah
    Amy Shah
    25,337 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    1 Answer

  • Malaya Manjula
    Malaya Manjula
    6,028 Points

    Add a new method named ReverseNumbers that has a return type of IEnumerable<int> and uses a LINQ query to return the _nu

    Posted March 1, 2017 1:52am by Malaya Manjula
    Malaya Manjula
    6,028 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    4 Answers

  • Erica Cleary
    Erica Cleary
    14,077 Points

    Needing help with task 2 of Querying with LINQ

    Posted February 27, 2017 8:37pm by Erica Cleary
    Erica Cleary
    14,077 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    3 Answers

  • Daniel Hildreth
    Daniel Hildreth
    16,170 Points

    LINQ method syntax challenge 2 help

    Posted October 18, 2016 5:12am by Daniel Hildreth
    Daniel Hildreth
    16,170 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    1 Answer

  • shawn khah
    shawn khah
    15,082 Points

    can't solve challenge 2 of 2

    Posted October 11, 2016 5:51pm by shawn khah
    shawn khah
    15,082 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    1 Answer

  • James Matthews
    James Matthews
    21,610 Points

    LINQ Method Cyntax 2/2

    Posted October 7, 2016 12:42pm by James Matthews
    James Matthews
    21,610 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    1 Answer

  • jcorum
    jcorum
    71,831 Points

    LINQ Method Syntax challenge

    Posted May 28, 2016 2:27am by jcorum
    jcorum
    71,831 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • LINQ Method Syntax

    1 Answer

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
SEE ALL

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
SEE ALL

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
SEE ALL

About Us

  • About
  • Blog
  • Community
  • Stories
  • Contact
  • Gift Card

Explore

  • Plans
  • Affiliates
  • Perks
  • Shop
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses

Treehouse is an online technology education platform founded in 2011. Treehouse offers more than 700 self-paced, video-based courses in web development, programming, data analysis, design, and AI, plus two project-based bootcamp programs in Front End Web Development and Full Stack JavaScript. Individual Treehouse plans start at $25 per month and include a 7-day free trial. Treehouse serves individual learners, businesses, schools, and public libraries. Cardholders at participating U.S. public libraries can use Treehouse for free. Select Treehouse courses, offered with University Pathways International, are recommended for college credit by ACE and NCCRS. Treehouse learners earn digital certificates for completed Tracks.

Terms & Conditions · Privacy · © 2026 Treehouse Island, Inc.
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
  • Discord