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How do I disable C# 6 Support in Visual Studio 2015?

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How do I disable C state?

From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > Power and Performance Options > C-State Efficiency Mode. Select one of the following: Enable. Disable.

Should I enable or disable C states?

C state is used for power saving and when you overclock you use the maximum power of the CPU, constantly. So you would not want to use c state. Disable both, also manual vcore always, adaptive might do some adjustments you don't want to happen. First off an overclocked processor does not use maximum power constantly.

How do I enable C state in BIOS?

From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > Power Management > Minimum Processor Idle Power Core C-State and press Enter. Select a setting and press Enter. Press F10.

How do I disable C states in ASUS BIOS?

In the bios, Advanced menu, CPU configuration, scroll to bottom, CPU Power Management, CPU C-States, Disable.


You can set the language feature for each project separately by going to Properties => Build tab => Advanced button => Language Version and set your preferred version.

You should realize that it will still use the new "C# 6.0" .Net Compiler Platform (codenamed Roslyn). However, that compiler will imitate the behavior of older compilers and will limit you to features only available on that specific language version.


I don't think that there's a solution-wide setting available.


add below in .sln.DotSettings should disable it on solution level

<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp50</s:String>

Or if you don't have a .sln.DotSettings file:

  1. If your solution file is called Apple.sln, create a file beside it called Apple.sln.DotSettings.

  2. Give it the following contents:

    <wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
        <s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp50</s:String>
    </wpf:ResourceDictionary>
    
  3. Close and reopen the solution, Resharper should only warn you about C#5 things.

  4. Don't forget to remove this when you eventually start using C#6 features! :)


This tool I wrote might help you if you have many projects that you need to set LangVersion for.


You can set the language feature for all the solutions/csproj with the MSBuildUserExtensionsPath.

Search the value of the $(MSBuildUserExtensionsPath), it should be something like C:\Users\$(User)\AppData\Local\Microsoft\MSBuild

Then edit the file Force.LangVersion.ImportBefore.props in the folder $(MSBuildUserExtensionsPath)\14.0\Imports\Microsoft.Common.Props\ImportBefore with :

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <LangVersion>5</LangVersion>
  </PropertyGroup>
</Project>