Microsoft
Visual Studio
Visual Studio
  • Home
    • Problems
    • Suggestions
  • Downloads
    • Visual Studio IDE
    • Visual Studio Code
    • Azure DevOps
    • Team Foundation Server
    • Accounts and Subscriptions
  • Subscriber Access
      • Microsoft 365
      • Azure
      • Office 365
      • Dynamics 365
      • SQL
      • Windows 10
      • Windows Server
      • Enterprise Mobility + Security
      • Power BI
      • Teams
      • Visual Studio
      • Surface for Business
      • AI
      • Internet of Things
      • Azure Cognitive Services
      • Quantum
      • Research
      • Docs
      • TechNet
      • Developer Network
      • Windows Dev Center
      • Windows IT Pro Center
      • FastTrack
      • Partner Network
      • Solution Providers
      • Partner Center
      • Cloud Hosting
      • Education
      • Financial services
      • Government
      • Health
      • Manufacturing & resources
      • Retail
      • Security
      • Licensing
      • AppSource
      • Azure Marketplace
      • Events
    • View all
    Sign in

    Developer Community

    Get help from our community supported forum
    • Home /
    • .NET
    Searched and didn’t find your feedback?
    • Visual Studio
    • Visual Studio for Mac
    • .NET
    • C++
    • Azure DevOps
    • TFS
    or
    • Visual Studio
    • Visual Studio for Mac
    • .NET
    • C++
    • Azure DevOps
    • TFS
    Visual Studio
    Visual Studio for Mac
    .NET
    C++
    Azure DevOps
    TFS
    • Problems (742)

    • Features (123)

    • Open (2)
    • All
    • Active
    • Newest
    • Votes

    12 Votes

    1 Solution

    How to resolve cannot add the same member twice to a serializationInfo object exception?

    in .NET testing-tools   .net   c# Need More Info

    John Qiao [MSFT] commentedNov 9, '18

    4 Votes

    0 Solution

    TechnologyNotSupportedException: To test Windows Store apps, use the Coded UI Test project template for Windows Store apps under the Windows Store node.

    in .NET testing-tools   .net   c# Triaged

    Doug Young commentedDec 17, '18

    Follow

    Follow This Space

    142 People are following this

    avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

    Popular Topics

    windows 10.0 Azure DevOps Setup debugger visual studio 2017 version 15.8 visual studio 2017 version 15.5 visual studio 2017 version 15.7 C++ editor windows 6.1 visual studio 2017 rc visual studio visual studio 2017 version 15.3 visual studio 2017 version 15.6 Visual Studio 2017 version 15.2 project performance visual studio 2017 version 15.4 visual studio 2017 ide solution crash visual studio for mac visual studio 2017 version 15.9 tfs xaml Visual Studio 2017 version 15.1 visual studio 2019 version 16.0 preview windows 10.0.16299 testing-tools
    View all

    What's new

    • NEW Surface Pro 6
    • NEW Surface Laptop 2
    • NEW Surface Go
    • Xbox One X
    • Xbox One S
    • VR & mixed reality
    • Windows 10 apps
    • Office apps

    Store & Support

    • Account profile
    • Download Center
    • Sales & support
    • Returns
    • Order tracking
    • Store locations
    • Support
    • Buy online, pick up in store

    Education

    • Microsoft in education
    • Office for students
    • Office 365 for schools
    • Deals for students & parents
    • Microsoft Azure in education

    Enterprise

    • Microsoft Azure
    • Enterprise
    • Data platform
    • Find a solution provider
    • Microsoft partner resources
    • Microsoft AppSource
    • Manufacturing & resources
    • Financial services

    Developer

    • Microsoft Visual Studio
    • Windows Dev Center
    • Developer Network
    • TechNet
    • Microsoft developer program
    • Channel 9
    • Office Dev Center

    Company

    • Careers
    • About Microsoft
    • Company news
    • Privacy at Microsoft
    • Investors
    • Diversity and inclusion
    • Accessibility
    • Security
    English (United States)
    • Sitemap
    • Contact us
    • Privacy & cookies
    • Terms of use
    • Trademarks
    • Safety & eco
    • About our ads
    • © Microsoft 2018
    • Anonymous
    • Sign in
    • Spaces
    • Visual Studio
    • Visual Studio for Mac
    • .NET
    • C++
    • Azure DevOps
    • TFS
    • Explore
    • Topics
    • Problems
    • Features
    • Users
    • Badges