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

Join our Live Career-Building Workshop: Fast-Track Your Tech Career Without a Degree! ⭐ Register here!

🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

Curious which AI tools Treehouse developers love? ⚙️ Check them out!

🫡 Treehouse for Military offers discounts to Veterans, service members and their families!

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • 100 Days of Code
    • Live Sessions
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
  • Resources
    Chevron
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • Blog
    • Support
    • About
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • 100 Days of Code Live Sessions Code Adventures Discord Forum Success Stories Treehouse Links
  • Career Toolbox CodeForward Free Treehouse Near Me Jobs Blog Support About
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • 21st Century Skills
      • • AI
      • • Android
      • • APIs
      • • Business
      • • C#
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Equity, Diversity, and Inclusion (EDI)
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • PHP
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
  • Jon Andreas Grenness
    Jon Andreas Grenness
    5,055 Points

    Error when trying to create a 'stub' course

    Posted December 13, 2021 1:40pm by Jon Andreas Grenness
    Jon Andreas Grenness
    5,055 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Deleting an Entity

    2 Answers

  • saikiran maddukuri
    saikiran maddukuri
    17,919 Points

    What is the use of Attach?

    Posted September 2, 2019 5:42am by saikiran maddukuri
    saikiran maddukuri
    17,919 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating Entities

    0 Answers

  • Juan Ignacio Scopp
    PLUS
    Juan Ignacio Scopp
    Courses Plus Student 291 Points

    When did the ComicBookLibraryManager method get coded?

    Posted November 17, 2018 12:22pm by Juan Ignacio Scopp
    Juan Ignacio Scopp
    Courses Plus Student 291 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Creating Entities

    1 Answer

  • Mark Ramos
    Mark Ramos
    19,209 Points

    Errors when loading this project

    Posted September 4, 2018 7:50pm by Mark Ramos
    Mark Ramos
    19,209 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Creating Entities

    1 Answer

  • jared eiseman
    jared eiseman
    29,023 Points

    Not sure I understand what's going on here...

    Posted July 12, 2018 11:47pm by jared eiseman
    jared eiseman
    29,023 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating an Entity

    1 Answer

  • olu adesina
    olu adesina
    23,007 Points

    Attach() in ENTITY FRAMEWORK

    Posted July 12, 2018 3:42pm by olu adesina
    olu adesina
    23,007 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating Entities

    1 Answer

  • Robert Patterson
    Robert Patterson
    2,915 Points

    using the 'Attach' method keeps throwing error: System.InvalidOperationException HResult = 0x80131509

    Posted May 1, 2018 4:29am by Robert Patterson
    Robert Patterson
    2,915 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating Entities

    0 Answers

  • Hakim Rachidi
    Hakim Rachidi
    38,490 Points

    When is an entity tracked by the context?

    Posted April 3, 2018 10:25am by Hakim Rachidi
    Hakim Rachidi
    38,490 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating Entities

    1 Answer

  • Lee Puckett
    Lee Puckett
    12,539 Points

    Any tips for this challenge - Updating Entities - appreciated.

    Posted November 15, 2017 5:21pm by Lee Puckett
    Lee Puckett
    12,539 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating an Entity

    4 Answers

  • Larry Singleton
    Larry Singleton
    18,946 Points

    Entity Framework

    Posted July 8, 2017 8:44am by Larry Singleton
    Larry Singleton
    18,946 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Deleting an Entity

    4 Answers

  • Alexander Olson
    Alexander Olson
    13,067 Points

    Deleting an Entity:

    Posted July 6, 2017 11:20pm by Alexander Olson
    Alexander Olson
    13,067 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Deleting an Entity

    2 Answers

  • Adam Urteaga
    Adam Urteaga
    19,503 Points

    'GetContext' doesn't exist?

    Posted June 14, 2017 6:05pm by Adam Urteaga
    Adam Urteaga
    19,503 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Deleting an Entity

    1 Answer

  • Rodi Kubaizi
    Rodi Kubaizi
    1,439 Points

    what do you mean by disconnected entity ?

    Posted June 7, 2017 6:44pm by Rodi Kubaizi
    Rodi Kubaizi
    1,439 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Section Review

    1 Answer

  • Joe Mackey
    Joe Mackey
    20,418 Points

    In Repository.cs update the AddCourse method to add a course to the context. Instantiate an instance of the

    Posted June 4, 2017 3:37pm by Joe Mackey
    Joe Mackey
    20,418 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Creating an Entity

    5 Answers

  • Amy Shah
    Amy Shah
    25,337 Points

    very close possibly

    Posted March 11, 2017 4:14pm by Amy Shah
    Amy Shah
    25,337 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Creating an Entity

    1 Answer

  • Amy Shah
    Amy Shah
    25,337 Points

    i might be very close now

    Posted March 11, 2017 4:13pm by Amy Shah
    Amy Shah
    25,337 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating an Entity

    1 Answer

  • Amy Shah
    Amy Shah
    25,337 Points

    compiler says SaveChanges is not recognized

    Posted March 11, 2017 2:38pm by Amy Shah
    Amy Shah
    25,337 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Creating an Entity

    1 Answer

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

    Treehouse

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

See Full Catalogue

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis
  • UX Design

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Plans
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2024 Treehouse Island, Inc.