Don't forget to gift yourself this Cyber Monday 👀 Get a year of Courses for $150 (40% off!)

Dive into new course Game Development with Phaser 👾

New AI course: Introduction to Computer Vision 💻

💥 ALL NEW: Code Adventures! ⚡ Dare to embark on a front end coding adventure 🌟

Get job-ready with our Career Toolbox Track's career advice, resume tips, and more 🧰

🤖 Check out all our AI content here 👀

Learn about our new Community Discord server here and join us on Discord here!

Students: got a cool project or resource to share? Submit it to Treehouse Links! 🤩

  • Home
  • Free Trial
  • Sign In
  • Plans
  • Tracks
  • Library
  • Community
  • Code Adventures
  • Support
  • Jobs
    • 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
  • 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

  • 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
    38,489 Points

    When is an entity tracked by the context?

    Posted April 3, 2018 10:25am by Hakim Rachidi
    Hakim Rachidi
    38,489 Points
    • C#
    • Entity Framework Basics
    • CRUD Operations
    • Updating Entities

    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
  • Public Library Access
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2023 Treehouse Island, Inc.