The Roslyn compiler provides a set of tools and APIs for compiling and analyzing code, and it's often included in ASP.NET projects to leverage its capabilities. However, there might be scenarios where you need to remove Roslyn from your project, perhaps due to compatibility issues or other specific requirements. This guide will walk you through the steps to remove Roslyn from your ASP.NET project.
Step 1: Uninstall Roslyn-Related NuGet Packages
First, you need to uninstall the Roslyn-related NuGet packages from your project. These packages are typically Microsoft.CodeDom.Providers.DotNetCompilerPlatform and Microsoft.Net.Compilers.
- Open your project in Visual Studio.
- Navigate to the NuGet Package Manager:
- Right-click on your project in the Solution Explorer.
- Select "Manage NuGet Packages."
- Uninstall the packages:
- Go to the "Installed" tab.
- Find and uninstall
Microsoft.CodeDom.Providers.DotNetCompilerPlatform.
- Find and uninstall
Microsoft.Net.Compilers.
Step 2: Remove Roslyn Folder
After uninstalling the packages, you should remove the Roslyn folder from your project directory if it exists.
- Navigate to the
bin directory of your project:
- Open your project's root folder in File Explorer.
- Go to the
bin directory.
- Delete the
roslyn folder if it exists.
Step 3: Update the web.config File
Next, you need to update the web.config file to remove any references to Roslyn. Open your web.config file and locate the <system.codedom> section. It will look something like this:
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</compilers>
</system.codedom>
Step 4: Clean and Rebuild Your Project
After making these changes, it’s essential to clean and rebuild your project to ensure all references to Roslyn are removed and that your project builds correctly without it.
- Clean your solution:
- Right-click on your solution in the Solution Explorer.
- Select "Clean Solution."
- Rebuild your solution:
- Right-click on your solution in the Solution Explorer.
- Select "Rebuild Solution."
Step 5: Verify Functionality
Finally, run your application to ensure it works correctly without Roslyn. Verify that pages load as expected and that there are no compiler-related issues. | 
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