检测Razor / C＃代码？

Question

Is there a way to detect if an HTML page contains any razor/C# code? Essentially I want users to be able to provide custom layouts, with tags that I will replace with RenderSection. I want to validate that prior to making this replacement, that none of the HTML contains anything like for example, <a href="@(some C# code)" .

All discussions about alternative ways to do this, should/could/would aside, just simply: Is there a way to programmatically detect if a file contains C#/Razor code?

Answer 1

I don't know a lot about the Razor markup -- but I am thinking that when you grab the layout string they are passing in you will want to parse the text out and grab everything that starts with an @ and toss those words into an array. Then, when you republish it to you website use razor code to access the data in the array...

Alternately, and easier, would be to go through all the passed in code and replace all the @ signs with a different symbol say & that way it wont get interpreted by the Razor processor:

layoutString = layoutString.Replace('@', '&');

Answer 2

In the browser? No, because unless the programmer made a mistake, there is no Razor/C# code in teh rendered HTML, only HTML that was the result of that.

What you ask is like asking what type of oven was used to bake a pizza from the pizza. Bad news - you never will know.

If you provie sensible tags from those, you could parse them in javascript, but you have to output that metadata yourself as part of the generated html.

Answer 3

After reading your comment to TomTom; the answer is:

No. Razor does not come with any public syntax parser.