Parser error message: the codedom provider type “microsoft.codedom.providers.dotnetcompilerplatform.csharpcodeprovider, microsoft.codedom.providers.dotnetcompilerplatform, version=2.0.1.0, culture=neutral, publickeytoken=31bf3856ad364e35” could not be located.

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Parser Error Message

The CodeDOM provider type “Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35” could not be located.

Description

This error message occurs when the CodeDOM provider required for compiling and executing code dynamically using Microsoft’s CodeDOM technology is not found or could not be loaded. The CodeDOM provider being referred to in this message is specifically for the DotNetCompilerPlatform, which is used to compile C# code dynamically at runtime.

Possible Causes

  • The DotNetCompilerPlatform package is not installed in the project.
  • The DotNetCompilerPlatform package is not the correct version (2.0.1.0) or is not compatible with the current project.
  • The DotNetCompilerPlatform assembly is missing or not referenced properly in the project.

Solution

To resolve this error, you can take the following steps:

  1. Ensure that the DotNetCompilerPlatform package is installed in your project. You can check the project’s dependencies and packages.config file to verify this.
  2. If the package is already installed, make sure it is the correct version (2.0.1.0) and compatible with your project. You can update the package using the NuGet Package Manager.
  3. Check if the DotNetCompilerPlatform assembly is referenced properly in your project. You may need to add a reference to the correct assembly manually.

Example

For example, if you are using Visual Studio, you can follow these steps:

  1. Right-click on your project in the Solution Explorer and select “Manage NuGet Packages”.
  2. In the NuGet Package Manager, search for “DotNetCompilerPlatform” and install the package if it is not already installed.
  3. If the package is already installed, ensure that it is the correct version (2.0.1.0) and compatible with your project. You can update the package if needed.
  4. If the issue persists, verify that the DotNetCompilerPlatform assembly is referenced in your project. You can do this by right-clicking on the “References” folder in the Solution Explorer and selecting “Add Reference”. Look for the DotNetCompilerPlatform assembly in the list and add it if it is missing.

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