RoslynCodeSnippet_9.cs

private void ValidatePropertyDeclarationSyntax(PropertyDeclarationSyntax declarationSyntax)
{
  IPropertySymbol symbol = semanticModel.GetDeclaredSymbol(declarationSyntax) as IPropertySymbol;

  if (symbol.IsStatic)
  {
      errors.Add((ValidationErrorType.Illegal_Feature, "Static properties are not allowed"));
      return;
  }

  if (symbol.IsOverride)
  {
      errors.Add((ValidationErrorType.Illegal_Feature, "Overriding properties is not allowed"));
      return;
  }

  if (symbol.IsAbstract)
  {
      errors.Add((ValidationErrorType.Illegal_Feature, "Abstract properties are not allowed"));
      return;
  }

  if (symbol.IsVirtual)
  {
      errors.Add((ValidationErrorType.Illegal_Feature, "Virtual properties are not allowed"));
      return;
  }

  string assemblyName = symbol.Type.ContainingAssembly.Name;
  if (IsIllegalAssemblyName(assemblyName))
  {
      errors.Add((ValidationErrorType.Illegal_Assembly, $"Types from assembly {assemblyName} are not allowed"));
      return;
  }
}