Trying to get autocompletion on a Razor .cshtml view with Roslyn's CompletionService

RazorCompletionsWithRoslyn.cs

        [HttpPost]
        public string FetchCompletions(RazorCode model)
        {
            var host = new System.Web.Razor.RazorEngineHost(new CSharpRazorCodeLanguage());
            var templateEngine = new System.Web.Razor.RazorTemplateEngine(host);
            
            var compiledCode = templateEngine.GenerateCode(new StringReader(model.Code));
            var parsed = templateEngine.ParseTemplate(new StringReader(model.Code));

            // Cannot convert from 'System.Web.Razor.Parser.SyntaxTree.Block' to 'Microsoft.CodeAnalysis.Document'
            var completionService = Microsoft.CodeAnalysis.Completion.CompletionService.GetService(compiledCode.Document);
            var completions = completionService.GetCompletionsAsync(compiledCode.Document, 1);

            return "hello warren";
        }

Note

The above code is NOT working & this is what I need some help & advice on.

Hi Warren, Did you find the solution?

@muratalalmis no not from memory - do you have an answer to the problem?

I couldn't find a solution with this way but I saw a solution when I'm inspecting the vscode's C# extension. It was using the omnisharp (http://prntscr.com/vk5aw0)