C
C#•3y ago
Binto86

Could not load file or assembly 'System.Collections.Imutable' when using source generators

I am trying source generators, and now i am getting warning 
Generator failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'FileNotFoundException' with message 'Could not load file or assembly 'System.Collections.Immutable, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
Generator failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'FileNotFoundException' with message 'Could not load file or assembly 'System.Collections.Immutable, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
i am pretty sure that this error has something to do with context.AdditionalFiles as it didn't occur when i didn't use them, this is my code: 
public void Execute(GeneratorExecutionContext context)
{
  var mainMethod = context.Compilation.GetEntryPoint(context.CancellationToken);
  for (int i = 0; i < context.AdditionalFiles.Length; i++)
  {
    var file = context.AdditionalFiles[i];
    if (file.Path.EndsWith(".py"))
    {
      var ClassName = Path.GetFileNameWithoutExtension(file.Path);
      string source = $@"
// <auto-generated/>
{PythonGenerator.GenerateClass(file.Path, mainMethod.ContainingNamespace.Name)}
";


      // Add the source code to the compilation
      context.AddSource($"{ClassName}.g.cs", source);
        }
      }
    }
public void Execute(GeneratorExecutionContext context)
{
  var mainMethod = context.Compilation.GetEntryPoint(context.CancellationToken);
  for (int i = 0; i < context.AdditionalFiles.Length; i++)
  {
    var file = context.AdditionalFiles[i];
    if (file.Path.EndsWith(".py"))
    {
      var ClassName = Path.GetFileNameWithoutExtension(file.Path);
      string source = $@"
// <auto-generated/>
{PythonGenerator.GenerateClass(file.Path, mainMethod.ContainingNamespace.Name)}
";


      // Add the source code to the compilation
      context.AddSource($"{ClassName}.g.cs", source);
        }
      }
    }
3 Replies
333fred
333fred•3y ago
Remember, #roslyn is a thing I suspect you have mismatched dependency versions between the version of VS you're using and the version of roslyn you're using
Binto86
Binto86OP•3y ago
ok... and what can i do about it?
333fred
333fred•3y ago
Line them up You need to use the appropriate version of roslyn for the version of VS you want to run on

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