⚡ CYBER NOVEMBER SALE ⚡ 50% off any plan for 6 months, exclusive to new subscribers.

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

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
    • College Credit
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
  • 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 College Credit
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • 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
      • • 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
  • Julien Bonin
    Julien Bonin
    3,891 Points

    How do I change my database connection from 'LocalDB' to 'localhost'? I'm unable to run this tutorial on my Mac.

    Posted January 25, 2021 4:39pm by Julien Bonin
    Julien Bonin
    3,891 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • What is Entity Framework?

    0 Answers

  • saikiran maddukuri
    saikiran maddukuri
    17,919 Points

    ComicBookGalleryModel.ComicBook: : EntityType 'ComicBook' has no key defined. Defi

    Posted August 24, 2019 10:28am by saikiran maddukuri
    saikiran maddukuri
    17,919 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Using the Context

    0 Answers

  • Ar33ss Leon
    Ar33ss Leon
    4,621 Points

    Is it a good practice to modify generated code from Database first?

    Posted June 16, 2019 11:58pm by Ar33ss Leon
    Ar33ss Leon
    4,621 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Adding Our First Entity Using the Code First Workflow

    1 Answer

  • kevin hudson
    PLUS
    kevin hudson
    Courses Plus Student 11,987 Points

    Where is the database?

    Posted May 4, 2019 6:43pm by kevin hudson
    kevin hudson
    Courses Plus Student 11,987 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Using the Context

    0 Answers

  • Andre Martins
    Andre Martins
    1,629 Points

    VS not recognizing a DbContext and not displaying the "using System.Data.Entity;" option, neither recognizing it if typd

    Posted September 27, 2018 2:26pm by Andre Martins
    Andre Martins
    1,629 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Adding Our Context

    1 Answer

  • Roger Sullivan
    Roger Sullivan
    10,992 Points

    Server is in single user mode. Only one administrator can connect at this time

    Posted September 11, 2018 5:43pm by Roger Sullivan
    Roger Sullivan
    10,992 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Using the Context

    0 Answers

  • Cecilia Benítez
    Cecilia Benítez
    1,396 Points

    Please fill in the correct answer in each blank provided below.

    Posted July 18, 2018 1:36pm by Cecilia Benítez
    Cecilia Benítez
    1,396 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Section Review

    2 Answers

  • odalis garcia
    odalis garcia
    21,311 Points

    I am stuck like a duck. Please help

    Posted June 30, 2018 12:55pm by odalis garcia
    odalis garcia
    21,311 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Adding a Context

    1 Answer

  • Jose Perez
    Jose Perez
    1,338 Points

    Help please where did you get DatabaseFirstTestDB when selecting database name?

    Posted December 16, 2017 7:01am by Jose Perez
    Jose Perez
    1,338 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Workflows: Database First

    1 Answer

  • Shawn McCall
    Shawn McCall
    7,863 Points

    Add method not working properly?

    Posted October 18, 2017 4:41pm by Shawn McCall
    Shawn McCall
    7,863 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Using the Context

    1 Answer

  • Andras Somodi
    Andras Somodi
    9,230 Points

    An unhandled exception of type 'System.NotSupportedException' occurred in EntityFramework.dll

    Posted May 25, 2017 9:38am by Andras Somodi
    Andras Somodi
    9,230 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Using the Context

    1 Answer

  • matthewgaikema
    matthewgaikema
    6,059 Points

    Monodevelop support

    Posted May 1, 2017 7:16pm by matthewgaikema
    matthewgaikema
    6,059 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Workflows: Model First

    0 Answers

  • Ezequiel Hurt
    Ezequiel Hurt
    8,061 Points

    SQL Unhandled Exception

    Posted April 26, 2017 1:20pm by Ezequiel Hurt
    Ezequiel Hurt
    8,061 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Using the Context

    2 Answers

  • Anders Lund
    Anders Lund
    4,155 Points

    Did he connect the context to the older comicBook project?

    Posted March 18, 2017 7:59pm by Anders Lund
    Anders Lund
    4,155 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Using the Context

    3 Answers

  • Akshay Shenvi
    Akshay Shenvi
    1,052 Points

    define classs error

    Posted January 10, 2017 2:58pm by Akshay Shenvi
    Akshay Shenvi
    1,052 Points
    • C#
    • Entity Framework Basics
    • Introducing Entity Framework
    • Adding 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
  • Affiliates
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2025 Treehouse Island, Inc.